├── .rubocop.yml ├── test ├── cookbooks │ └── iptables_ng_test │ │ ├── recipes │ │ ├── recipe_default.rb │ │ ├── recipe_install.rb │ │ ├── attribute_enabled_tables.rb │ │ ├── lwrp_chain_create_empty.rb │ │ ├── lwrp_chain_create_default.rb │ │ ├── lwrp_chain_create_if_missing.rb │ │ ├── lwrp_chain_create_custom.rb │ │ ├── lwrp_rule_create_default.rb │ │ ├── lwrp_rule_create_custom.rb │ │ ├── lwrp_rule_create_custom_chain.rb │ │ ├── lwrp_rule_delete.rb │ │ ├── lwrp_rule_create_if_missing.rb │ │ └── lwrp_rule_check_order.rb │ │ └── metadata.rb ├── nodes │ └── test.json └── integration │ ├── lwrp_rule_check_order │ └── lwrp_rule_check_order_test.rb │ ├── lwrp_chain_create_empty │ └── lwrp_chain_create_empty_test.rb │ ├── lwrp_chain_create_default │ └── lwrp_chain_create_default_test.rb │ ├── lwrp_chain_create_if_missing │ └── lwrp_chain_create_if_missing_test.rb │ ├── lwrp_chain_create_custom │ └── lwrp_chain_create_custom_test.rb │ ├── lwrp_rule_delete │ └── lwrp_rule_delete_test.rb │ ├── lwrp_rule_create_custom │ └── lwrp_rule_create_custom_test.rb │ ├── lwrp_rule_create_default │ └── lwrp_rule_create_default_test.rb │ ├── lwrp_rule_create_custom_chain │ └── lwrp_rule_create_custom_chain_test.rb │ ├── lwrp_rule_create_if_missing │ └── lwrp_rule_create_if_missing_test.rb │ ├── attribute_enabled_tables │ └── attribute_enabled_tables_test.rb │ ├── default │ └── default_test.rb │ └── install │ └── install_test.rb ├── .gitignore ├── Berksfile ├── spec ├── spec_helper.rb ├── default_spec.rb └── install_spec.rb ├── metadata.rb ├── libraries ├── matchers.rb ├── restart_service.rb └── create_iptables_rules.rb ├── resources ├── chain.rb └── rule.rb ├── recipes ├── manage.rb ├── install.rb └── default.rb ├── chefignore ├── .github └── workflows │ └── chef.yml ├── attributes ├── rules.rb └── default.rb ├── providers ├── chain.rb └── rule.rb ├── kitchen.yml ├── CHANGELOG.md ├── kitchen.dokken.yml ├── README.md └── LICENSE /.rubocop.yml: -------------------------------------------------------------------------------- 1 | Style/TrailingCommaInArguments: 2 | EnforcedStyleForMultiline: comma 3 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/recipe_default.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::default' 2 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/recipe_install.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/attribute_enabled_tables.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::default' 2 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .vagrant 2 | Berksfile.lock 3 | Gemfile.lock 4 | .bundle 5 | .cache 6 | .kitchen 7 | .kitchen.local.yml 8 | bin 9 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_chain_create_empty.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_chain 'EMPTY' 4 | -------------------------------------------------------------------------------- /Berksfile: -------------------------------------------------------------------------------- 1 | source 'https://supermarket.chef.io' 2 | 3 | metadata 4 | 5 | group :integration do 6 | cookbook 'iptables_ng_test', path: 'test/cookbooks/iptables_ng_test' 7 | end 8 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_chain_create_default.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_chain 'FORWARD' do 4 | policy 'DROP [0:0]' 5 | action :create 6 | end 7 | -------------------------------------------------------------------------------- /spec/spec_helper.rb: -------------------------------------------------------------------------------- 1 | require 'chefspec' 2 | 3 | RSpec.configure do |config| 4 | config.platform = 'ubuntu' 5 | config.version = '20.04' 6 | config.expect_with(:rspec) { |c| c.syntax = :expect } 7 | end 8 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_chain_create_if_missing.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_chain 'FORWARD' do 4 | policy 'DROP [0:0]' 5 | action :create_if_missing 6 | end 7 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_chain_create_custom.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_chain 'FORWARD' do 4 | table 'mangle' 5 | policy 'DROP [0:0]' 6 | action :create 7 | end 8 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_rule_create_default.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_rule 'ssh' do 4 | # use defaults 5 | rule '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT' 6 | end 7 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_rule_create_custom.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_rule 'custom-output' do 4 | chain 'OUTPUT' 5 | table 'nat' 6 | rule '--protocol icmp --jump ACCEPT' 7 | action :create 8 | end 9 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/metadata.rb: -------------------------------------------------------------------------------- 1 | name 'iptables_ng_test' 2 | maintainer 'Chris Aumann' 3 | maintainer_email 'me@chr4.org' 4 | license 'GPL-3.0' 5 | description 'This cookbook is used with test-kitchen to test the parent, iptables cookbook' 6 | version '0.1.0' 7 | depends 'iptables-ng' 8 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_rule_create_custom_chain.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | # We need to create the custom chain first 4 | iptables_ng_chain 'FOO' do 5 | table 'nat' 6 | end 7 | 8 | iptables_ng_rule 'custom-chain-output' do 9 | chain 'FOO' 10 | table 'nat' 11 | rule '--protocol icmp --jump ACCEPT' 12 | action :create 13 | end 14 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_rule_delete.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_rule 'http' do 4 | rule '--protocol tcp --dport 80 --match state --state NEW --jump ACCEPT' 5 | action :create 6 | end 7 | 8 | iptables_ng_rule 'http' do 9 | rule '--protocol tcp --dport 80 --match state --state NEW --jump ACCEPT' 10 | action :delete 11 | end 12 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_rule_create_if_missing.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_rule 'ssh' do 4 | rule '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT' 5 | action :create 6 | end 7 | 8 | iptables_ng_rule 'ssh' do 9 | rule '--protocol tcp --dport 80 --match state --state NEW --jump ACCEPT' 10 | action :create_if_missing 11 | end 12 | -------------------------------------------------------------------------------- /test/nodes/test.json: -------------------------------------------------------------------------------- 1 | { 2 | "iptables-ng": { 3 | "rules": { 4 | "filter": { 5 | "INPUT": { 6 | "default": "DROP [0:0]", 7 | "test1": { 8 | "rule": "--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT" 9 | }, 10 | "test2": { 11 | "rule": "--protocol tcp --dport 80 --match state --state NEW --jump DROP", 12 | "ip_version": 4 13 | } 14 | } 15 | } 16 | } 17 | } 18 | } 19 | -------------------------------------------------------------------------------- /metadata.rb: -------------------------------------------------------------------------------- 1 | name 'iptables-ng' 2 | maintainer 'Chris Aumann' 3 | maintainer_email 'me@chr4.org' 4 | license 'GPL-3.0-or-later' 5 | description 'Installs/Configures iptables-ng' 6 | source_url 'https://github.com/chr4-cookbooks/iptables-ng' 7 | issues_url 'https://github.com/chr4-cookbooks/iptables-ng/issues' 8 | version '4.1.0' 9 | chef_version '>= 15.3' 10 | 11 | %w(ubuntu debian 12 | redhat centos amazon suse scientific 13 | fedora gentoo arch).each do |os| 14 | supports os 15 | end 16 | -------------------------------------------------------------------------------- /test/integration/lwrp_rule_check_order/lwrp_rule_check_order_test.rb: -------------------------------------------------------------------------------- 1 | script_ipv4 = case os.family 2 | when 'debian' 3 | '/etc/iptables/rules.v4' 4 | when 'redhat' 5 | '/etc/sysconfig/iptables' 6 | else 7 | '/etc/iptables-rules.ipt' 8 | end 9 | 10 | # Should concatinate iptables rules in specified order 11 | describe file(script_ipv4) do 12 | it { should exist } 13 | its('content') { should match(/--sport 110.*--dport 20.*--dport 50.*--dport 51.*--dport 998.*--dport 99/m) } 14 | end 15 | -------------------------------------------------------------------------------- /test/cookbooks/iptables_ng_test/recipes/lwrp_rule_check_order.rb: -------------------------------------------------------------------------------- 1 | include_recipe 'iptables-ng::install' 2 | 3 | iptables_ng_rule '99-last' do 4 | rule '--protocol tcp --dport 99 --jump ACCEPT' 5 | end 6 | 7 | iptables_ng_rule '20-second' do 8 | rule '--jump ACCEPT --protocol udp --dport 20' 9 | end 10 | 11 | iptables_ng_rule '10-first' do 12 | rule '--protocol tcp --jump ACCEPT --sport 110' 13 | end 14 | 15 | iptables_ng_rule '51-medium-2' do 16 | rule '--jump ACCEPT --protocol tcp --dport 51' 17 | end 18 | 19 | iptables_ng_rule '50-medium-1' do 20 | rule '--protocol udp --dport 50 --jump ACCEPT' 21 | end 22 | 23 | iptables_ng_rule '98-almost-last' do 24 | rule '--jump ACCEPT --protocol tcp --dport 998' 25 | end 26 | -------------------------------------------------------------------------------- /libraries/matchers.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Library:: matchers 4 | # 5 | # Copyright:: 2014, Dan Fruehauf 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | # Matchers for chefspec 22 | -------------------------------------------------------------------------------- /spec/default_spec.rb: -------------------------------------------------------------------------------- 1 | require 'spec_helper' 2 | 3 | describe 'iptables-ng::default' do 4 | let(:chef_run) do 5 | ChefSpec::ServerRunner.new do |node| 6 | node.automatic.merge!(JSON.parse(File.read('test/nodes/test.json'))) 7 | end.converge(described_recipe) 8 | end 9 | 10 | it 'should include iptables-ng::install' do 11 | expect(chef_run).to include_recipe('iptables-ng::install') 12 | end 13 | 14 | it 'should apply rules from node definition' do 15 | expect(chef_run).to create_iptables_ng_rule('test1-filter-INPUT-attribute-rule') 16 | .with( 17 | chain: 'INPUT', 18 | table: 'filter', 19 | rule: '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT', 20 | ip_version: [4, 6], 21 | ) 22 | 23 | expect(chef_run).to create_iptables_ng_rule('test2-filter-INPUT-attribute-rule') 24 | .with( 25 | chain: 'INPUT', 26 | table: 'filter', 27 | rule: '--protocol tcp --dport 80 --match state --state NEW --jump DROP', 28 | ip_version: 4, 29 | ) 30 | end 31 | end 32 | -------------------------------------------------------------------------------- /test/integration/lwrp_chain_create_empty/lwrp_chain_create_empty_test.rb: -------------------------------------------------------------------------------- 1 | # Should not default FORWARD policy to DROP 2 | describe file('/etc/iptables.d/filter/EMPTY/default') do 3 | it { should exist } 4 | its('content') { should match('\- \[0\:0\]') } 5 | end 6 | 7 | service_ipv4 = case os.family 8 | when 'debian' 9 | 'netfilter-persistent' 10 | else 11 | 'iptables' 12 | end 13 | 14 | service_ipv6 = case os.family 15 | when 'debian' 16 | 'netfilter-persistent' 17 | else 18 | 'ip6tables' 19 | end 20 | 21 | # Should enable iptables serices 22 | describe service(service_ipv4) do 23 | it { should be_enabled } 24 | end 25 | 26 | describe service(service_ipv6) do 27 | it { should be_enabled } 28 | end 29 | 30 | # Should apply the specified iptables rules 31 | describe command('iptables -L -n') do 32 | its('stdout') { should match('Chain EMPTY \(0 references\)') } 33 | its('exit_status') { should eq 0 } 34 | end 35 | 36 | describe command('ip6tables -L -n') do 37 | its('stdout') { should match('Chain EMPTY \(0 references\)') } 38 | its('exit_status') { should eq 0 } 39 | end 40 | -------------------------------------------------------------------------------- /test/integration/lwrp_chain_create_default/lwrp_chain_create_default_test.rb: -------------------------------------------------------------------------------- 1 | # Should set default FORWARD policy to DROP 2 | describe file('/etc/iptables.d/filter/FORWARD/default') do 3 | it { should exist } 4 | its('content') { should match('DROP \[0\:0\]') } 5 | end 6 | 7 | service_ipv4 = case os.family 8 | when 'debian' 9 | 'netfilter-persistent' 10 | else 11 | 'iptables' 12 | end 13 | 14 | service_ipv6 = case os.family 15 | when 'debian' 16 | 'netfilter-persistent' 17 | else 18 | 'ip6tables' 19 | end 20 | 21 | # Should enable iptables serices 22 | describe service(service_ipv4) do 23 | it { should be_enabled } 24 | end 25 | 26 | describe service(service_ipv6) do 27 | it { should be_enabled } 28 | end 29 | 30 | # Should apply the specified iptables rules 31 | describe command('iptables -L -n') do 32 | its('stdout') { should match('Chain FORWARD \(policy DROP\)') } 33 | its('exit_status') { should eq 0 } 34 | end 35 | 36 | describe command('ip6tables -L -n') do 37 | its('stdout') { should match('Chain FORWARD \(policy DROP\)') } 38 | its('exit_status') { should eq 0 } 39 | end 40 | -------------------------------------------------------------------------------- /test/integration/lwrp_chain_create_if_missing/lwrp_chain_create_if_missing_test.rb: -------------------------------------------------------------------------------- 1 | # Should not default FORWARD policy to DROP 2 | describe file('/etc/iptables.d/filter/FORWARD/default') do 3 | it { should exist } 4 | its('content') { should_not match('DROP \[0\:0\]') } 5 | end 6 | 7 | service_ipv4 = case os.family 8 | when 'debian' 9 | 'netfilter-persistent' 10 | else 11 | 'iptables' 12 | end 13 | 14 | service_ipv6 = case os.family 15 | when 'debian' 16 | 'netfilter-persistent' 17 | else 18 | 'ip6tables' 19 | end 20 | 21 | # Should enable iptables serices 22 | describe service(service_ipv4) do 23 | it { should be_enabled } 24 | end 25 | 26 | describe service(service_ipv6) do 27 | it { should be_enabled } 28 | end 29 | 30 | # Should apply the specified iptables rules 31 | describe command('iptables -L -n') do 32 | its('stdout') { should match('Chain FORWARD \(policy ACCEPT\)') } 33 | its('exit_status') { should eq 0 } 34 | end 35 | 36 | describe command('ip6tables -L -n') do 37 | its('stdout') { should match('Chain FORWARD \(policy ACCEPT\)') } 38 | its('exit_status') { should eq 0 } 39 | end 40 | -------------------------------------------------------------------------------- /test/integration/lwrp_chain_create_custom/lwrp_chain_create_custom_test.rb: -------------------------------------------------------------------------------- 1 | # Should set mangle FORWARD policy to DROP 2 | describe file('/etc/iptables.d/mangle/FORWARD/default') do 3 | it { should exist } 4 | its('content') { should match('DROP \[0\:0\]') } 5 | end 6 | 7 | service_ipv4 = case os.family 8 | when 'debian' 9 | 'netfilter-persistent' 10 | else 11 | 'iptables' 12 | end 13 | 14 | service_ipv6 = case os.family 15 | when 'debian' 16 | 'netfilter-persistent' 17 | else 18 | 'ip6tables' 19 | end 20 | 21 | # Should enable iptables serices 22 | describe service(service_ipv4) do 23 | it { should be_enabled } 24 | end 25 | 26 | describe service(service_ipv6) do 27 | it { should be_enabled } 28 | end 29 | 30 | # Should apply the specified iptables rules 31 | describe command('iptables -t mangle -L -n') do 32 | its('stdout') { should match('Chain FORWARD \(policy DROP\)') } 33 | its('exit_status') { should eq 0 } 34 | end 35 | 36 | describe command('ip6tables -t mangle -L -n') do 37 | its('stdout') { should match('Chain FORWARD \(policy DROP\)') } 38 | its('exit_status') { should eq 0 } 39 | end 40 | -------------------------------------------------------------------------------- /test/integration/lwrp_rule_delete/lwrp_rule_delete_test.rb: -------------------------------------------------------------------------------- 1 | # Should not set HTTP rule 2 | describe file('/etc/iptables.d/filter/INPUT/http.rule_v4') do 3 | it { should_not exist } 4 | end 5 | 6 | # Should not set HTTP ip6tables rule 7 | describe file('/etc/iptables.d/filter/INPUT/http.rule_v6') do 8 | it { should_not exist } 9 | end 10 | 11 | service_ipv4 = case os.family 12 | when 'debian' 13 | 'netfilter-persistent' 14 | else 15 | 'iptables' 16 | end 17 | 18 | service_ipv6 = case os.family 19 | when 'debian' 20 | 'netfilter-persistent' 21 | else 22 | 'ip6tables' 23 | end 24 | 25 | # Should enable iptables serices 26 | describe service(service_ipv4) do 27 | it { should be_enabled } 28 | end 29 | 30 | describe service(service_ipv6) do 31 | it { should be_enabled } 32 | end 33 | 34 | # Should apply the specified iptables rules 35 | describe command('iptables -L -n') do 36 | its('stdout') { should_not match('tcp dpt:80 state NEW') } 37 | its('exit_status') { should eq 0 } 38 | end 39 | 40 | describe command('ip6tables -L -n') do 41 | its('stdout') { should_not match('tcp dpt:80 state NEW') } 42 | its('exit_status') { should eq 0 } 43 | end 44 | -------------------------------------------------------------------------------- /resources/chain.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables 3 | # Resource:: chain 4 | # 5 | # Copyright:: 2012, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | unified_mode true 22 | 23 | actions :create, :create_if_missing, :delete 24 | default_action :create 25 | 26 | # linux/netfilter/x_tables.h doesn't restrict chains very tightly. Just a string token 27 | # with a max length of XT_EXTENSION_MAXLEN (29 in all 3.x headers I could find) 28 | attribute :chain, kind_of: String, name_attribute: true, regex: /^[\w-]{1,29}$/ 29 | attribute :table, kind_of: String, default: 'filter', equal_to: %w(filter nat mangle raw) 30 | attribute :policy, kind_of: String, default: 'ACCEPT [0:0]' 31 | -------------------------------------------------------------------------------- /test/integration/lwrp_rule_create_custom/lwrp_rule_create_custom_test.rb: -------------------------------------------------------------------------------- 1 | # Should set custom iptables rule 2 | describe file('/etc/iptables.d/nat/OUTPUT/custom-output.rule_v4') do 3 | it { should exist } 4 | its('content') { should match('--protocol icmp --jump ACCEPT') } 5 | end 6 | 7 | # Should set custom ip6tables rule 8 | describe file('/etc/iptables.d/nat/OUTPUT/custom-output.rule_v6') do 9 | it { should exist } 10 | its('content') { should match('--protocol icmp --jump ACCEPT') } 11 | end 12 | 13 | service_ipv4 = case os.family 14 | when 'debian' 15 | 'netfilter-persistent' 16 | else 17 | 'iptables' 18 | end 19 | 20 | service_ipv6 = case os.family 21 | when 'debian' 22 | 'netfilter-persistent' 23 | else 24 | 'ip6tables' 25 | end 26 | 27 | # Should enable iptables serices 28 | describe service(service_ipv4) do 29 | it { should be_enabled } 30 | end 31 | 32 | describe service(service_ipv6) do 33 | it { should be_enabled } 34 | end 35 | 36 | # Should apply the specified iptables rules 37 | describe command('iptables -t nat -L -n') do 38 | its('stdout') { should match(/ACCEPT\s+icmp/) } 39 | its('exit_status') { should eq 0 } 40 | end 41 | 42 | describe command('ip6tables -t nat -L -n') do 43 | its('stdout') { should match(/ACCEPT\s+icmp/) } 44 | its('exit_status') { should eq 0 } 45 | end 46 | -------------------------------------------------------------------------------- /test/integration/lwrp_rule_create_default/lwrp_rule_create_default_test.rb: -------------------------------------------------------------------------------- 1 | # Should set SSH iptables rule 2 | describe file('/etc/iptables.d/filter/INPUT/ssh.rule_v4') do 3 | it { should exist } 4 | its('content') { should match('--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT') } 5 | end 6 | 7 | # Should set SSH ip6tables rule 8 | describe file('/etc/iptables.d/filter/INPUT/ssh.rule_v6') do 9 | it { should exist } 10 | its('content') { should match('--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT') } 11 | end 12 | 13 | service_ipv4 = case os.family 14 | when 'debian' 15 | 'netfilter-persistent' 16 | else 17 | 'iptables' 18 | end 19 | 20 | service_ipv6 = case os.family 21 | when 'debian' 22 | 'netfilter-persistent' 23 | else 24 | 'ip6tables' 25 | end 26 | 27 | # Should enable iptables serices 28 | describe service(service_ipv4) do 29 | it { should be_enabled } 30 | end 31 | 32 | describe service(service_ipv6) do 33 | it { should be_enabled } 34 | end 35 | 36 | # Should apply the specified iptables rules 37 | describe command('iptables -L -n') do 38 | its('stdout') { should match('tcp dpt:22 state NEW') } 39 | its('exit_status') { should eq 0 } 40 | end 41 | 42 | describe command('ip6tables -L -n') do 43 | its('stdout') { should match('tcp dpt:22 state NEW') } 44 | its('exit_status') { should eq 0 } 45 | end 46 | -------------------------------------------------------------------------------- /test/integration/lwrp_rule_create_custom_chain/lwrp_rule_create_custom_chain_test.rb: -------------------------------------------------------------------------------- 1 | # Should create the custom chain directory 2 | describe directory('/etc/iptables.d/nat/FOO') do 3 | it { should exist } 4 | end 5 | 6 | # Should set custom iptables rule 7 | describe file('/etc/iptables.d/nat/FOO/custom-chain-output.rule_v4') do 8 | it { should exist } 9 | its('content') { should match('--protocol icmp --jump ACCEPT') } 10 | end 11 | 12 | # Should set custom ip6tables rule 13 | describe file('/etc/iptables.d/nat/FOO/custom-chain-output.rule_v6') do 14 | it { should exist } 15 | its('content') { should match('--protocol icmp --jump ACCEPT') } 16 | end 17 | 18 | service_ipv4 = case os.family 19 | when 'debian' 20 | 'netfilter-persistent' 21 | else 22 | 'iptables' 23 | end 24 | 25 | service_ipv6 = case os.family 26 | when 'debian' 27 | 'netfilter-persistent' 28 | else 29 | 'ip6tables' 30 | end 31 | 32 | # Should enable iptables serices 33 | describe service(service_ipv4) do 34 | it { should be_enabled } 35 | end 36 | 37 | describe service(service_ipv6) do 38 | it { should be_enabled } 39 | end 40 | 41 | # Should apply the specified iptables rules 42 | describe command('iptables -t nat -L -n') do 43 | its('stdout') { should match(/ACCEPT\s+icmp/) } 44 | its('exit_status') { should eq 0 } 45 | end 46 | 47 | describe command('ip6tables -t nat -L -n') do 48 | its('stdout') { should match(/ACCEPT\s+icmp/) } 49 | its('exit_status') { should eq 0 } 50 | end 51 | -------------------------------------------------------------------------------- /recipes/manage.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Recipe:: manage 4 | # 5 | # Copyright:: 2013, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | # This recipe only creates ruby_blocks that are called later by the LWRPs 22 | # Do not use it by its own 23 | 24 | ruby_block 'create_rules' do 25 | block do 26 | class Chef::Resource::RubyBlock 27 | include Iptables::Manage 28 | end 29 | 30 | Array(node['iptables-ng']['enabled_ip_versions']).each do |ip_version| 31 | create_iptables_rules(ip_version) 32 | end 33 | end 34 | 35 | action :nothing 36 | end 37 | 38 | ruby_block 'restart_iptables' do 39 | block do 40 | class Chef::Resource::RubyBlock 41 | include Iptables::Manage 42 | end 43 | 44 | if node['iptables-ng']['managed_service'] 45 | Array(node['iptables-ng']['enabled_ip_versions']).each do |ip_version| 46 | restart_service(ip_version) 47 | end 48 | end 49 | end 50 | 51 | action :nothing 52 | end 53 | -------------------------------------------------------------------------------- /chefignore: -------------------------------------------------------------------------------- 1 | # Put files/directories that should be ignored in this file when uploading 2 | # or sharing to the community site. 3 | # Lines that start with '# ' are comments. 4 | 5 | # OS generated files # 6 | ###################### 7 | .DS_Store 8 | Icon? 9 | nohup.out 10 | ehthumbs.db 11 | Thumbs.db 12 | 13 | # SASS # 14 | ######## 15 | .sass-cache 16 | 17 | # EDITORS # 18 | ########### 19 | \#* 20 | .#* 21 | *~ 22 | *.sw[a-z] 23 | *.bak 24 | REVISION 25 | TAGS* 26 | tmtags 27 | *_flymake.* 28 | *_flymake 29 | *.tmproj 30 | .project 31 | .settings 32 | mkmf.log 33 | 34 | ## COMPILED ## 35 | ############## 36 | a.out 37 | *.o 38 | *.pyc 39 | *.so 40 | *.com 41 | *.class 42 | *.dll 43 | *.exe 44 | */rdoc/ 45 | 46 | # Testing # 47 | ########### 48 | .watchr 49 | .rspec 50 | spec/* 51 | spec/fixtures/* 52 | test/* 53 | features/* 54 | Guardfile 55 | Procfile 56 | 57 | # SCM # 58 | ####### 59 | .git 60 | */.git 61 | .gitignore 62 | .gitmodules 63 | .gitconfig 64 | .gitattributes 65 | .svn 66 | */.bzr/* 67 | */.hg/* 68 | */.svn/* 69 | 70 | # Berkshelf # 71 | ############# 72 | Berksfile 73 | Berksfile.lock 74 | cookbooks/* 75 | tmp 76 | 77 | # Cookbooks # 78 | ############# 79 | CONTRIBUTING 80 | CHANGELOG* 81 | 82 | # Strainer # 83 | ############ 84 | Colanderfile 85 | Strainerfile 86 | .colander 87 | .strainer 88 | 89 | # Vagrant # 90 | ########### 91 | .vagrant 92 | Vagrantfile 93 | 94 | # Travis # 95 | ########## 96 | .travis.yml 97 | 98 | .bundle 99 | .kitchen 100 | *~ 101 | *# 102 | .#* 103 | \#*# 104 | .*.sw[a-z] 105 | *.un~ 106 | .bundle 107 | .cache 108 | .kitchen 109 | bin 110 | .kitchen.local.yml 111 | -------------------------------------------------------------------------------- /.github/workflows/chef.yml: -------------------------------------------------------------------------------- 1 | name: Chef 2 | 3 | on: 4 | push: 5 | branches: [ master ] 6 | pull_request: 7 | branches: [ master ] 8 | 9 | jobs: 10 | integration: 11 | runs-on: ubuntu-latest 12 | strategy: 13 | matrix: 14 | os: 15 | # NOTE: Commented out (older) versions do not work on Github Actions with this cookbook 16 | # - 'centos-7' 17 | - 'centos-8' 18 | - 'debian-10' 19 | - 'debian-11' 20 | # - 'ubuntu-1604' 21 | # - 'ubuntu-1804' 22 | # - 'ubuntu-2004' 23 | - 'ubuntu-2204' 24 | suite: 25 | - 'lwrp-chain-create-default' 26 | - 'lwrp-chain-create-custom' 27 | - 'lwrp-chain-create-if-missing' 28 | - 'lwrp-chain-create-empty' 29 | - 'lwrp-rule-create-default' 30 | - 'lwrp-rule-create-custom' 31 | - 'lwrp-rule-create-custom-chain' 32 | - 'lwrp-rule-create-if-missing' 33 | - 'lwrp-rule-delete' 34 | - 'lwrp-rule-check-order' 35 | - 'default' 36 | - 'install' 37 | - 'attribute-enabled-tables' 38 | fail-fast: false 39 | steps: 40 | - name: Check out code 41 | uses: actions/checkout@master 42 | - name: Install Chef 43 | uses: actionshub/chef-install@main 44 | - name: Linting 45 | run: cookstyle -f simple || (echo "Run 'cookstyle -a' to correct cookstyle errors." && exit 1) 46 | - name: test-kitchen 47 | uses: actionshub/test-kitchen@main 48 | with: 49 | suite: ${{ matrix.suite }} 50 | os: ${{ matrix.os }} 51 | env: 52 | CHEF_LICENSE: accept-no-persist 53 | KITCHEN_LOCAL_YAML: kitchen.dokken.yml 54 | -------------------------------------------------------------------------------- /test/integration/lwrp_rule_create_if_missing/lwrp_rule_create_if_missing_test.rb: -------------------------------------------------------------------------------- 1 | # Should set SSH iptables rule 2 | describe file('/etc/iptables.d/filter/INPUT/ssh.rule_v4') do 3 | it { should exist } 4 | its('content') { should match('--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT') } 5 | its('content') { should_not match('--protocol tcp --dport 80 --match state --state NEW --jump ACCEPT') } 6 | end 7 | 8 | # Should set SSH ip6tables rule 9 | describe file('/etc/iptables.d/filter/INPUT/ssh.rule_v6') do 10 | it { should exist } 11 | its('content') { should match('--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT') } 12 | its('content') { should_not match('--protocol tcp --dport 80 --match state --state NEW --jump ACCEPT') } 13 | end 14 | 15 | service_ipv4 = case os.family 16 | when 'debian' 17 | 'netfilter-persistent' 18 | else 19 | 'iptables' 20 | end 21 | 22 | service_ipv6 = case os.family 23 | when 'debian' 24 | 'netfilter-persistent' 25 | else 26 | 'ip6tables' 27 | end 28 | 29 | # Should enable iptables serices 30 | describe service(service_ipv4) do 31 | it { should be_enabled } 32 | end 33 | 34 | describe service(service_ipv6) do 35 | it { should be_enabled } 36 | end 37 | 38 | # Should apply the specified iptables rules 39 | describe command('iptables -L -n') do 40 | its('stdout') { should match('tcp dpt:22 state NEW') } 41 | its('stdout') { should_not match('tcp dpt:80 state NEW') } 42 | its('exit_status') { should eq 0 } 43 | end 44 | 45 | describe command('ip6tables -L -n') do 46 | its('stdout') { should match('tcp dpt:22 state NEW') } 47 | its('stdout') { should_not match('tcp dpt:80 state NEW') } 48 | its('exit_status') { should eq 0 } 49 | end 50 | -------------------------------------------------------------------------------- /attributes/rules.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Attributes:: default-rules 4 | # 5 | # Copyright:: 2012, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | # Set up default policies 22 | default['iptables-ng']['rules']['filter']['INPUT']['default'] = 'ACCEPT [0:0]' 23 | default['iptables-ng']['rules']['filter']['OUTPUT']['default'] = 'ACCEPT [0:0]' 24 | default['iptables-ng']['rules']['filter']['FORWARD']['default'] = 'ACCEPT [0:0]' 25 | 26 | default['iptables-ng']['rules']['nat']['OUTPUT']['default'] = 'ACCEPT [0:0]' 27 | default['iptables-ng']['rules']['nat']['PREROUTING']['default'] = 'ACCEPT [0:0]' 28 | default['iptables-ng']['rules']['nat']['POSTROUTING']['default'] = 'ACCEPT [0:0]' 29 | 30 | default['iptables-ng']['rules']['mangle']['INPUT']['default'] = 'ACCEPT [0:0]' 31 | default['iptables-ng']['rules']['mangle']['OUTPUT']['default'] = 'ACCEPT [0:0]' 32 | default['iptables-ng']['rules']['mangle']['FORWARD']['default'] = 'ACCEPT [0:0]' 33 | default['iptables-ng']['rules']['mangle']['PREROUTING']['default'] = 'ACCEPT [0:0]' 34 | default['iptables-ng']['rules']['mangle']['POSTROUTING']['default'] = 'ACCEPT [0:0]' 35 | 36 | default['iptables-ng']['rules']['raw']['OUTPUT']['default'] = 'ACCEPT [0:0]' 37 | default['iptables-ng']['rules']['raw']['PREROUTING']['default'] = 'ACCEPT [0:0]' 38 | -------------------------------------------------------------------------------- /resources/rule.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables 3 | # Resource:: rule 4 | # 5 | # Copyright:: 2012, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | unified_mode true 22 | 23 | actions :create, :create_if_missing, :delete 24 | default_action :create 25 | 26 | # Allow only dashes, underscores word characters and dots in rule name 27 | # As the name attribute will be used as a filename later 28 | attribute :name, kind_of: String, name_attribute: true, regex: /^[-\w\.]+$/ 29 | # linux/netfilter/x_tables.h doesn't restrict chains very tightly. Just a string token 30 | # with a max length of XT_EXTENSION_MAXLEN (29 in all 3.x headers I could find) 31 | attribute :chain, kind_of: String, default: 'INPUT', regex: /^[\w-]{1,29}$/ 32 | attribute :table, kind_of: String, default: 'filter', equal_to: %w(filter nat mangle raw) 33 | attribute :rule, kind_of: [Array, String], default: [] 34 | attribute :ip_version, kind_of: [Array, Integer], default: lazy { node['iptables-ng']['enabled_ip_versions'] }, equal_to: [[4, 6], [4], [6], 4, 6] 35 | 36 | def path_for_chain 37 | "/etc/iptables.d/#{table}/#{chain}" 38 | end 39 | 40 | def path_for_ip_version(version) 41 | "#{path_for_chain}/#{name}.rule_v#{version}" 42 | end 43 | 44 | def paths 45 | Array(ip_version).map do |version| 46 | path_for_ip_version version 47 | end 48 | end 49 | -------------------------------------------------------------------------------- /providers/chain.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Provider:: chain 4 | # 5 | # Copyright:: 2012, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | require 'date' 22 | 23 | action :create do 24 | edit_chain(:create) 25 | end 26 | 27 | action :create_if_missing do 28 | edit_chain(:create_if_missing) 29 | end 30 | 31 | action :delete do 32 | edit_chain(:delete) 33 | end 34 | 35 | def edit_chain(exec_action) 36 | # Only default chains can have a policy 37 | policy = 38 | if %w(INPUT OUTPUT FORWARD PREROUTING POSTROUTING).include?(new_resource.chain) 39 | new_resource.policy 40 | else 41 | '- [0:0]' 42 | end 43 | 44 | chain_path = "/etc/iptables.d/#{new_resource.table}/#{new_resource.chain}/default" 45 | 46 | # Generate a random resource identifier to workaround Chef cloning issues 47 | rnd_resource = "#{chain_path}-#{DateTime.now.to_time.to_i}-#{rand(100_000)}" 48 | 49 | directory rnd_resource do 50 | path ::File.dirname(chain_path) 51 | owner 'root' 52 | group node['root_group'] 53 | mode '700' 54 | not_if { exec_action == :delete } 55 | end 56 | 57 | file rnd_resource do 58 | path chain_path 59 | owner 'root' 60 | group node['root_group'] 61 | mode '600' 62 | content "#{policy}\n" 63 | notifies :run, 'ruby_block[create_rules]', :delayed 64 | notifies :run, 'ruby_block[restart_iptables]', :delayed 65 | action exec_action 66 | end 67 | end 68 | -------------------------------------------------------------------------------- /providers/rule.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Provider:: rule 4 | # 5 | # Copyright:: 2012, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | action :create do 22 | edit_rule(:create) 23 | end 24 | 25 | action :create_if_missing do 26 | edit_rule(:create_if_missing) 27 | end 28 | 29 | action :delete do 30 | edit_rule(:delete) 31 | end 32 | 33 | def edit_rule(exec_action) 34 | # Create rule for given ip_versions 35 | Array(new_resource.ip_version).each do |ip_version| 36 | # Skip nat table if ip6tables doesn't support it 37 | next if new_resource.table == 'nat' && 38 | node['iptables-ng']['ip6tables_nat_support'] == false && 39 | ip_version == 6 40 | 41 | rule_path = new_resource.path_for_ip_version(ip_version) 42 | 43 | rule_content = Array(new_resource.rule).map do |rule| 44 | "--append #{new_resource.chain} #{rule.chomp}" 45 | end.join("\n") 46 | 47 | directory rule_path do 48 | path ::File.dirname(rule_path) 49 | owner 'root' 50 | group node['root_group'] 51 | mode '700' 52 | not_if { exec_action == :delete } 53 | end 54 | 55 | file new_resource.path_for_ip_version(ip_version) do 56 | owner 'root' 57 | group node['root_group'] 58 | mode '600' 59 | content rule_content 60 | notifies :run, 'ruby_block[create_rules]', :delayed 61 | notifies :run, 'ruby_block[restart_iptables]', :delayed 62 | action exec_action 63 | end 64 | end 65 | 66 | # TODO: Link to .rule for rhel compatibility? 67 | end 68 | -------------------------------------------------------------------------------- /libraries/restart_service.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Recipe:: restart_service 4 | # 5 | # Copyright:: 2013, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | # This was implemented as a internal-only provider. 22 | # Apparently, calling a LWRP from a LWRP doesnt' really work with 23 | # subscribes / notifies. Therefore, using this workaround. 24 | 25 | module Iptables 26 | module Manage 27 | def restart_service(ip_version) 28 | # Restart iptables service if available 29 | if node['iptables-ng']["service_ipv#{ip_version}"] 30 | 31 | # Do not restart twice if the command is the same for ipv4 and ipv6 32 | return if node['iptables-ng']['service_ipv4'] == node['iptables-ng']['service_ipv6'] && ip_version == 6 33 | 34 | Chef::Resource::Service.new(node['iptables-ng']["service_ipv#{ip_version}"], run_context).tap do |service| 35 | service.supports(status: true, restart: true) 36 | service.run_action(:enable) 37 | service.run_action(:restart) 38 | end 39 | 40 | # If no service is available, apply the rules manually 41 | else 42 | Chef::Log.info 'applying rules manually, as no service is specified' 43 | Chef::Resource::Execute.new("iptables-restore for ipv#{ip_version}", run_context).tap do |execute| 44 | execute.command("iptables-restore < #{node['iptables-ng']['script_ipv4']}") if ip_version == 4 45 | execute.command("ip6tables-restore < #{node['iptables-ng']['script_ipv6']}") if ip_version == 6 46 | execute.run_action(:run) 47 | end 48 | end 49 | end 50 | end 51 | end 52 | -------------------------------------------------------------------------------- /recipes/install.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Recipe:: install 4 | # 5 | # Copyright:: 2013, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | include_recipe 'iptables-ng::manage' 22 | 23 | # Make sure iptables is installed 24 | Array(node['iptables-ng']['packages']).each do |pkg| 25 | package "iptables-ng::install - #{pkg} package" do 26 | package_name pkg 27 | notifies :run, 'execute[iptables-ng::install - systemctl daemon-reload]', :immediately 28 | end 29 | end 30 | 31 | # Check to see if we're using systemd so we run systemctl daemon-reload to pick up new services 32 | execute 'iptables-ng::install - systemctl daemon-reload' do 33 | command 'systemctl daemon-reload' 34 | action :nothing 35 | only_if { systemd? } 36 | end 37 | 38 | # Make sure ufw is not installed on Ubuntu/Debian, as it might interfere 39 | package 'iptables-ng::install - ufw package' do 40 | package_name 'uwf' 41 | action :remove 42 | only_if { platform_family?('debian') } 43 | end 44 | 45 | # Create directories 46 | directory '/etc/iptables.d' do 47 | mode '700' 48 | end 49 | 50 | node['iptables-ng']['rules'].each do |table, chains| 51 | # Skip deactivated tables 52 | next unless node['iptables-ng']['enabled_tables'].include?(table) 53 | 54 | directory "/etc/iptables.d/#{table}" do 55 | mode '700' 56 | end 57 | 58 | # Create default policies unless they exist 59 | chains.each do |chain, policy| 60 | iptables_ng_chain "default-policy-#{table}-#{chain}" do 61 | chain chain 62 | table table 63 | policy policy['default'] 64 | action :create_if_missing 65 | end 66 | end 67 | end 68 | -------------------------------------------------------------------------------- /recipes/default.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Recipe:: default 4 | # 5 | # Copyright:: 2013, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | include_recipe 'iptables-ng::install' 22 | 23 | # Apply rules from node attributes 24 | node['iptables-ng']['rules'].each do |table, chains| 25 | # Skip deactivated tables 26 | next unless node['iptables-ng']['enabled_tables'].include?(table) 27 | 28 | chains.each do |chain, p| 29 | # policy is read only, duplicate it 30 | policy = p.dup 31 | 32 | # Apply chain policy 33 | iptables_ng_chain "attribute-policy-#{chain}-#{table}" do 34 | chain chain 35 | table table 36 | policy policy.delete('default') 37 | end 38 | 39 | # Gather rules from filesystem to delete unused ones later 40 | unused = Dir["/etc/iptables.d/#{table}/#{chain}/*-#{table}-#{chain}-attribute-rule.*"] 41 | 42 | # Apply rules 43 | policy.each do |name, r| 44 | res = iptables_ng_rule "#{name}-#{table}-#{chain}-attribute-rule" do 45 | chain chain 46 | table table 47 | rule r['rule'] 48 | ip_version r['ip_version'] if r['ip_version'] 49 | action r['action'].to_sym if r['action'] 50 | end 51 | 52 | # Remove from unused rules 53 | unused -= res.paths 54 | end 55 | 56 | # Delete unused rules now 57 | unused.each do |path| 58 | file path do 59 | notifies :run, 'ruby_block[create_rules]', :delayed 60 | notifies :run, 'ruby_block[restart_iptables]', :delayed 61 | action :delete 62 | only_if { node['iptables-ng']['auto_prune_attribute_rules'] } 63 | end 64 | end 65 | end 66 | end 67 | -------------------------------------------------------------------------------- /spec/install_spec.rb: -------------------------------------------------------------------------------- 1 | require 'spec_helper' 2 | 3 | describe 'iptables-ng::install' do 4 | describe 'debian' do 5 | let(:chef_run) do 6 | ChefSpec::ServerRunner.new do |node| 7 | node.automatic['platform_family'] = 'debian' 8 | end.converge(described_recipe) 9 | end 10 | 11 | it 'should remove ufw' do 12 | expect(chef_run).to remove_package('iptables-ng::install - ufw package') 13 | end 14 | end 15 | 16 | let(:chef_run) do 17 | ChefSpec::ServerRunner.new do |node| 18 | node.automatic.merge!(JSON.parse(File.read('test/nodes/test.json'))) 19 | end.converge(described_recipe) 20 | end 21 | 22 | it 'should include iptables-ng::manage' do 23 | expect(chef_run).to include_recipe('iptables-ng::manage') 24 | end 25 | 26 | it 'should create directory for chains' do 27 | expect(chef_run).to create_directory('/etc/iptables.d/filter') 28 | expect(chef_run).to create_directory('/etc/iptables.d/nat') 29 | expect(chef_run).to create_directory('/etc/iptables.d/mangle') 30 | expect(chef_run).to create_directory('/etc/iptables.d/raw') 31 | end 32 | 33 | it 'should apply default policies' do 34 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-filter-INPUT') 35 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-filter-OUTPUT') 36 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-filter-FORWARD') 37 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-nat-OUTPUT') 38 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-nat-PREROUTING') 39 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-nat-POSTROUTING') 40 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-mangle-INPUT') 41 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-mangle-OUTPUT') 42 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-mangle-FORWARD') 43 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-mangle-PREROUTING') 44 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-mangle-POSTROUTING') 45 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-raw-OUTPUT') 46 | expect(chef_run).to create_if_missing_iptables_ng_chain('default-policy-raw-PREROUTING') 47 | end 48 | end 49 | -------------------------------------------------------------------------------- /test/integration/attribute_enabled_tables/attribute_enabled_tables_test.rb: -------------------------------------------------------------------------------- 1 | # Should not create default mangle FORWARD policy 2 | describe file('/etc/iptables.d/mangle/FORWARD/default4') do 3 | it { should_not exist } 4 | end 5 | 6 | # Should not create default nat FORWARD policy 7 | describe file('/etc/iptables.d/nat/FORWARD/default') do 8 | it { should_not exist } 9 | end 10 | 11 | # Should not create default raw FORARD policy 12 | describe file('/etc/iptables.d/raw/default') do 13 | it { should_not exist } 14 | end 15 | 16 | # Should not create iptables OUTPUT test_rule 17 | describe file('/etc/iptables.d/filter/OUTPUT/testrule-filter-OUTPUT-attribute-rule.rule_v4') do 18 | it { should_not exist } 19 | end 20 | 21 | # Should not create ip6tables OUTPUT test_rule 22 | describe file('/etc/iptables.d/filter/OUTPUT/testrule-filter-OUTPUT-attribute-rule.rule_v6') do 23 | it { should_not exist } 24 | end 25 | 26 | # Should create SSH iptables rule 27 | describe file('/etc/iptables.d/filter/INPUT/ssh-filter-INPUT-attribute-rule.rule_v4') do 28 | it { should exist } 29 | its('content') { should match('--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT') } 30 | end 31 | 32 | # Should create SSH ip6tables rule 33 | describe file('/etc/iptables.d/filter/INPUT/ssh-filter-INPUT-attribute-rule.rule_v6') do 34 | it { should exist } 35 | its('content') { should match('--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT') } 36 | end 37 | 38 | # Should apply SSH iptables rule 39 | describe command('iptables -L -n') do 40 | its('stdout') { should match('tcp dpt:22 state NEW') } 41 | its('exit_status') { should eq 0 } 42 | end 43 | 44 | describe command('ip6tables -L -n') do 45 | its('stdout') { should match('tcp dpt:22 state NEW') } 46 | its('exit_status') { should eq 0 } 47 | end 48 | 49 | # Should create ipv4_only iptables rule 50 | describe file('/etc/iptables.d/filter/INPUT/ipv4_only-filter-INPUT-attribute-rule.rule_v4') do 51 | it { should exist } 52 | its('content') { should match('--protocol tcp --source 1.2.3.4 --dport 123 --jump ACCEPT') } 53 | end 54 | 55 | # Should not create ipv4_only ip6tables rule 56 | describe file('/etc/iptables.d/filter/INPUT/ipv4_only-filter-INPUT-attribute-rule.rule_v6') do 57 | it { should_not exist } 58 | end 59 | 60 | # Should apply ipv4_only iptables rule 61 | describe command('iptables -L -n') do 62 | its('stdout') { should match('tcp dpt:123') } 63 | its('exit_status') { should eq 0 } 64 | end 65 | 66 | service_ipv4 = case os.family 67 | when 'debian' 68 | 'netfilter-persistent' 69 | else 70 | 'iptables' 71 | end 72 | 73 | service_ipv6 = case os.family 74 | when 'debian' 75 | 'netfilter-persistent' 76 | else 77 | 'ip6tables' 78 | end 79 | 80 | # Should enable iptables serices 81 | describe service(service_ipv4) do 82 | it { should be_enabled } 83 | end 84 | 85 | describe service(service_ipv6) do 86 | it { should be_enabled } 87 | end 88 | -------------------------------------------------------------------------------- /libraries/create_iptables_rules.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Recipe:: manage 4 | # 5 | # Copyright:: 2013, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | # This was implemented as a internal-only provider. 22 | # Apparently, calling a LWRP from a LWRP doesnt' really work with 23 | # subscribes / notifies. Therefore, using this workaround. 24 | 25 | module Iptables 26 | module Manage 27 | def create_iptables_rules(ip_version) 28 | rules = {} 29 | 30 | # Retrieve all iptables rules for this ip_version, 31 | # as well as default policies 32 | Dir["/etc/iptables.d/*/*/*.rule_v#{ip_version}", 33 | '/etc/iptables.d/*/*/default'].each do |path| 34 | # /etc/iptables.d/#{table}/#{chain}/#{rule}.rule_v#{ip_version} 35 | table, chain, filename = path.split('/')[3..5] 36 | rule = ::File.basename(filename) 37 | 38 | # Skip nat table if ip6tables doesn't support it 39 | next if table == 'nat' && 40 | node['iptables-ng']['ip6tables_nat_support'] == false && 41 | ip_version == 6 42 | 43 | # Skip deactivated tables 44 | next unless node['iptables-ng']['enabled_tables'].include?(table) 45 | 46 | # Create hashes unless they already exist, and add the rule 47 | rules[table] ||= {} 48 | rules[table][chain] ||= {} 49 | rules[table][chain][rule] = ::File.read(path) 50 | end 51 | 52 | iptables_restore = '' 53 | rules.each do |table, chains| 54 | iptables_restore << "*#{table}\n" 55 | 56 | # Get default policies and rules for this chain 57 | default_policies = chains.each_with_object({}) do |rule, new_chain| 58 | new_chain[rule[0]] = rule[1].select { |k, _| k == 'default' } 59 | end 60 | 61 | all_chain_rules = chains.each_with_object({}) do |rule, new_chain| 62 | new_chain[rule[0]] = rule[1].reject { |k, _| k == 'default' } 63 | end 64 | 65 | # Apply default policies first 66 | default_policies.each do |chain, policy| 67 | iptables_restore << ":#{chain} #{policy['default'].chomp}\n" 68 | end 69 | 70 | # Apply rules for this chain, but sort before adding 71 | all_chain_rules.each do |_chain, chain_rules| 72 | chain_rules.sort.each { |r| iptables_restore << "#{r.last.chomp}\n" } 73 | end 74 | 75 | iptables_restore << "COMMIT\n" 76 | end 77 | 78 | Chef::Resource::File.new(node['iptables-ng']["script_ipv#{ip_version}"], run_context).tap do |file| 79 | file.owner('root') 80 | file.group(node['root_group']) 81 | file.mode(0o600) 82 | file.content(iptables_restore) 83 | file.run_action(:create) 84 | end 85 | end 86 | end 87 | end 88 | -------------------------------------------------------------------------------- /kitchen.yml: -------------------------------------------------------------------------------- 1 | --- 2 | driver: 3 | name: vagrant 4 | 5 | driver_config: 6 | customize: 7 | memory: 512 8 | 9 | provisioner: 10 | name: chef_zero 11 | product_name: chef 12 | # product_version: 13 # default is 'latest', uncomment to test old Chef version 13 | 14 | verifier: 15 | name: inspec 16 | 17 | platforms: 18 | - name: ubuntu-18.04 19 | - name: ubuntu-20.04 20 | - name: ubuntu-22.04 21 | - name: debian-10 22 | - name: debian-11 23 | - name: centos-7 24 | - name: centos-8 25 | 26 | suites: 27 | - name: lwrp_chain_create_default 28 | run_list: 29 | - recipe[iptables_ng_test::lwrp_chain_create_default] 30 | - name: lwrp_chain_create_custom 31 | run_list: 32 | - recipe[iptables_ng_test::lwrp_chain_create_custom] 33 | - name: lwrp_chain_create_if_missing 34 | run_list: 35 | - recipe[iptables_ng_test::lwrp_chain_create_if_missing] 36 | - name: lwrp_chain_create_empty 37 | run_list: 38 | - recipe[iptables_ng_test::lwrp_chain_create_empty] 39 | 40 | - name: lwrp_rule_create_default 41 | run_list: 42 | - recipe[iptables_ng_test::lwrp_rule_create_default] 43 | - name: lwrp_rule_create_custom 44 | run_list: 45 | - recipe[iptables_ng_test::lwrp_rule_create_custom] 46 | - name: lwrp_rule_create_custom_chain 47 | run_list: 48 | - recipe[iptables_ng_test::lwrp_rule_create_custom_chain] 49 | - name: lwrp_rule_create_if_missing 50 | run_list: 51 | - recipe[iptables_ng_test::lwrp_rule_create_if_missing] 52 | - name: lwrp_rule_delete 53 | run_list: 54 | - recipe[iptables_ng_test::lwrp_rule_delete] 55 | - name: lwrp_rule_check_order 56 | run_list: 57 | - recipe[iptables_ng_test::lwrp_rule_check_order] 58 | 59 | - name: default 60 | run_list: 61 | - recipe[iptables_ng_test::recipe_default] 62 | attributes: 63 | iptables-ng: 64 | rules: 65 | filter: 66 | INPUT: 67 | ssh: 68 | rule: '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT' 69 | ipv4_only: 70 | rule: '--protocol tcp --source 1.2.3.4 --dport 123 --jump ACCEPT' 71 | ip_version: 4 72 | OUTPUT: 73 | testrule: 74 | rule: '--protocol icmp --jump ACCEPT' 75 | FORWARD: 76 | default: 'DROP [0:0]' 77 | nat: 78 | POSTROUTING: 79 | nat_test: 80 | rule: '--protocol tcp -j ACCEPT' 81 | mangle: 82 | FORWARD: 83 | default: 'DROP [0:0]' 84 | 85 | - name: install 86 | run_list: 87 | - recipe[iptables_ng_test::recipe_install] 88 | 89 | - name: attribute_enabled_tables 90 | run_list: 91 | - recipe[iptables_ng_test::attribute_enabled_tables] 92 | attributes: 93 | iptables-ng: 94 | enabled_tables: [ 'filter' ] 95 | rules: 96 | filter: 97 | INPUT: 98 | ssh: 99 | rule: '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT' 100 | ipv4_only: 101 | rule: '--protocol tcp --source 1.2.3.4 --dport 123 --jump ACCEPT' 102 | ip_version: 4 103 | nat: 104 | POSTROUTING: 105 | nat_test: 106 | rule: '--protocol tcp -j ACCEPT' 107 | mangle: 108 | FORWARD: 109 | default: 'DROP [0:0]' 110 | -------------------------------------------------------------------------------- /attributes/default.rb: -------------------------------------------------------------------------------- 1 | # 2 | # Cookbook:: iptables-ng 3 | # Attributes:: default 4 | # 5 | # Copyright:: 2012, Chris Aumann 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | # 20 | 21 | # Which IP versions to manage rules for 22 | default['iptables-ng']['enabled_ip_versions'] = [4, 6] 23 | 24 | # Which tables to manage: 25 | # When using containered setup (OpenVZ, Docker, LXC) it might might be 26 | # necessary to remove the "nat" and "raw" tables. 27 | default['iptables-ng']['enabled_tables'] = %w(nat filter mangle raw) 28 | 29 | # Configure whether the service should be managed by Chef 30 | # /!\ Be careful when using this feature as it might leave your server in an inconsistent state. 31 | # See https://github.com/chr4-cookbooks/iptables-ng/pull/42 for more details. 32 | default['iptables-ng']['managed_service'] = true 33 | 34 | # Configure whether to automatically clean up unused rules 35 | default['iptables-ng']['auto_prune_attribute_rules'] = false 36 | 37 | # Enable nat support for ipv6 38 | default['iptables-ng']['ip6tables_nat_support'] = true 39 | 40 | # Packages to install 41 | default['iptables-ng']['packages'] = 42 | case node['platform_family'] 43 | when 'debian' 44 | %w(iptables iptables-persistent) 45 | when 'rhel' 46 | if platform?('amazon') 47 | # Amazon Linux doesn't include "iptables-services" or "iptables-ipv6" 48 | %w(iptables) 49 | elsif node['platform_version'].to_f >= 7.0 50 | %w(iptables iptables-services) 51 | else 52 | %w(iptables iptables-ipv6) 53 | end 54 | else 55 | %w(iptables) 56 | end 57 | 58 | # Where the rules are stored and how they are executed 59 | # rubocop:disable Style/IdenticalConditionalBranches 60 | case node['platform'] 61 | when 'debian' 62 | default['iptables-ng']['service_ipv4'] = 'netfilter-persistent' 63 | default['iptables-ng']['service_ipv6'] = 'netfilter-persistent' 64 | default['iptables-ng']['script_ipv4'] = '/etc/iptables/rules.v4' 65 | default['iptables-ng']['script_ipv6'] = '/etc/iptables/rules.v6' 66 | 67 | when 'ubuntu' 68 | default['iptables-ng']['service_ipv4'] = 'netfilter-persistent' 69 | default['iptables-ng']['service_ipv6'] = 'netfilter-persistent' 70 | default['iptables-ng']['script_ipv4'] = '/etc/iptables/rules.v4' 71 | default['iptables-ng']['script_ipv6'] = '/etc/iptables/rules.v6' 72 | 73 | when 'redhat', 'centos', 'scientific', 'amazon', 'fedora' 74 | default['iptables-ng']['service_ipv4'] = 'iptables' 75 | default['iptables-ng']['service_ipv6'] = 'ip6tables' 76 | default['iptables-ng']['script_ipv4'] = '/etc/sysconfig/iptables' 77 | default['iptables-ng']['script_ipv6'] = '/etc/sysconfig/ip6tables' 78 | 79 | when 'gentoo' 80 | default['iptables-ng']['service_ipv4'] = 'iptables' 81 | default['iptables-ng']['service_ipv6'] = 'ip6tables' 82 | default['iptables-ng']['script_ipv4'] = '/var/lib/iptables/rules-save' 83 | default['iptables-ng']['script_ipv6'] = '/var/lib/ip6tables/rules-save' 84 | 85 | when 'arch' 86 | default['iptables-ng']['service_ipv4'] = 'iptables' 87 | default['iptables-ng']['service_ipv6'] = 'ip6tables' 88 | default['iptables-ng']['script_ipv4'] = '/etc/iptables/iptables.rules' 89 | default['iptables-ng']['script_ipv6'] = '/etc/iptables/ip6tables.rules' 90 | 91 | else 92 | default['iptables-ng']['script_ipv4'] = '/etc/iptables-rules.ipt' 93 | default['iptables-ng']['script_ipv6'] = '/etc/ip6tables-rules.ipt' 94 | end 95 | # rubocop:enable Style/IdenticalConditionalBranches 96 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | iptables-ng CHANGELOG 2 | ===================== 3 | 4 | This file is used to list changes made in each version of the iptables-ng cookbook. 5 | 6 | 4.1.0 7 | ----- 8 | 9 | - Remove deprecated foodcritic linting 10 | - Apply cookstyle linting fixes 11 | - Enable unified_mode 12 | - Rewrite tests to Inspec, remove deprecated minitest 13 | - Remove logic for EOL distros 14 | - Update kitchen test platforms 15 | - Support Github Actions for integration tests 16 | 17 | 18 | 4.0.0 19 | ----- 20 | 21 | - Add support for Chef-13 22 | 23 | NOTE: If you want to continue using `iptables-ng` on Chef 12, version lock this cookbook to `3.0.1`. This can be achieved by putting the following in your `Berksfile`: 24 | 25 | ```ruby 26 | cookbook 'iptables-ng', '~> 3.0.1' 27 | ``` 28 | 29 | 3.0.1 30 | ----- 31 | 32 | - Fix issue with resource cloning in Chef 13 33 | 34 | 3.0.0 35 | ----- 36 | 37 | Release to workaround cloning issues, for the upcoming Chef-13 release: 38 | - Removed the feature to automatically run `iptables-ng::install` upon LWRP 39 | usage. It's now required to manually run `iptables-ng::install` before using 40 | the LWRPs. This can be achieved by adding the following before using the 41 | LWRPs for the first time (also make sure it's only included once): 42 | ```ruby 43 | include_recipe 'iptables-ng::install' 44 | ``` 45 | - Removed the feature to automatically create new custom chains when using the 46 | `iptables_ng_rule` provider. Custom chains are now required to be added 47 | manually before using them: 48 | ```ruby 49 | iptables_ng_chain 'CUSTOM' 50 | iptables_ng_rule 'rule-using-custom-chain' 51 | ``` 52 | 53 | This release also fixes a bug previously introduced by trying to workaround the 54 | cloning issues, where a chain policy wasn't properly updated. See [this 55 | issue](https://github.com/chr4-cookbooks/iptables-ng/issues/63) for details. 56 | 57 | 2.3.1 58 | ----- 59 | 60 | - Add compatibility fix for older chef-clients 61 | 62 | 2.3.0 63 | ----- 64 | 65 | - Add workarounds for duplicate resource warnings 66 | 67 | 2.2.11 68 | ------ 69 | 70 | - Add compatibility setting for `source_url` attribute in `metadata.rb` 71 | 72 | 2.2.10 73 | ------ 74 | 75 | - Revert `use_inline_resources`, was causing trouble 76 | 77 | 2.2.9 (broken, do not use!) 78 | ----- 79 | 80 | - Fix code linting complaints (rubocop, foodcritc) 81 | - Add `use_inline_resources` to providers 82 | 83 | 2.2.8 84 | ----- 85 | 86 | - Add `node['iptables-ng']['auto_prune_attribute_rules']` attribute to remove unused/ old rules created by attributes automatically 87 | 88 | 2.2.7 89 | ----- 90 | 91 | - Add support for Debian Jessie 92 | 93 | 2.2.6 94 | ----- 95 | 96 | - Add possibility to disable the reload or restore of iptables at the end of a chef run 97 | 98 | 2.2.5 99 | ----- 100 | 101 | - Only install `iptables` package on Amazon Linux 102 | 103 | 2.2.4 104 | ----- 105 | 106 | - Check whether name attribute in rule provider is valid 107 | - Fix an issue with resource notification in rule provider 108 | - Fix an issue with nat table on ipv6 not properly skipped on systems without ip6tables nat support 109 | - Add `node['iptables-ng']['ip6tables_nat_support']` attribute, default to true on recent Ubuntu 110 | versions 111 | 112 | 2.2.3 113 | ----- 114 | 115 | - Add posibility to add an "action" when configuring iptables rules via attributes. See README for 116 | details 117 | 118 | 2.2.2 119 | ----- 120 | 121 | - Fix an issue with init-script name on Ubuntu >= 14.10 (was renamed to netfilter-persistent) 122 | 123 | 2.2.1 124 | ----- 125 | 126 | - Add support for RHEL 7 compatible distributions 127 | 128 | 129 | 2.2.0 130 | ----- 131 | 132 | - Add support for `node['iptables-ng']['enabled_tables']` 133 | 134 | 135 | 2.1.1 136 | ----- 137 | 138 | - Fix an issue with `node['iptables-ng']['enabled_ip_versions']`, Thanks [Bob Ziuchkovski](https://github.com/ziuchkovski) 139 | - Add Travis with rubocup and foodcritic checks 140 | 141 | 2.1.0 142 | ----- 143 | 144 | - Add rubocup 145 | - Add attribute `node['iptables-ng']['enabled_ip_versions']` 146 | 147 | 148 | 2.0.0 149 | ----- 150 | 151 | - Support custom chains 152 | - Rename/Migrate iptables\_ng\_policy provider to iptables\_ng\_chain 153 | 154 | 1.1.1 155 | ----- 156 | 157 | - Fixes duplicate resource name warnings [CHEF-3694], Thanks [James FitzGibbon](http://github.com/jf647) 158 | 159 | 1.1.0 160 | ----- 161 | 162 | - Support for ip\_version parameter in attributes. See README for details. 163 | 164 | If you use attributes to configure iptables\_ng, you need to migrate 165 | 166 | ```node['iptables-ng']['rules']['filter']['INPUT']['rej'] = 'myrule'``` 167 | 168 | to 169 | 170 | ```node['iptables-ng']['rules']['filter']['INPUT']['rej']['rule'] = 'myrule'``` 171 | 172 | 173 | 1.0.0 174 | ----- 175 | - [Chris Aumann] - Initial release of iptables-ng 176 | -------------------------------------------------------------------------------- /kitchen.dokken.yml: -------------------------------------------------------------------------------- 1 | driver: 2 | name: dokken 3 | privileged: true # because Docker and SystemD/Upstart 4 | chef_version: current 5 | 6 | transport: 7 | name: dokken 8 | 9 | provisioner: 10 | name: dokken 11 | client_rb: 12 | chef_license: "accept-silent" 13 | deprecations_as_errors: false 14 | 15 | # NOTE: Commented out (older) versions do not work on Github Actions with this cookbook 16 | platforms: 17 | # - name: centos-7 18 | # driver: 19 | # image: dokken/centos-7 20 | # pid_one_command: /usr/lib/systemd/systemd 21 | - name: centos-8 22 | driver: 23 | image: dokken/centos-8 24 | pid_one_command: /usr/lib/systemd/systemd 25 | 26 | - name: debian-10 27 | driver: 28 | image: dokken/debian-10 29 | pid_one_command: /bin/systemd 30 | intermediate_instructions: 31 | - RUN /usr/bin/apt-get update 32 | - name: debian-11 33 | driver: 34 | image: dokken/debian-11 35 | pid_one_command: /bin/systemd 36 | intermediate_instructions: 37 | - RUN /usr/bin/apt-get update 38 | 39 | # - name: ubuntu-16.04 40 | # driver: 41 | # image: dokken/ubuntu-16.04 42 | # pid_one_command: /bin/systemd 43 | # intermediate_instructions: 44 | # - RUN /usr/bin/apt-get update 45 | # - name: ubuntu-18.04 46 | # driver: 47 | # image: dokken/ubuntu-18.04 48 | # pid_one_command: /bin/systemd 49 | # intermediate_instructions: 50 | # - RUN /usr/bin/apt-get update 51 | # - name: ubuntu-20.04 52 | # driver: 53 | # image: dokken/ubuntu-20.04 54 | # pid_one_command: /bin/systemd 55 | # intermediate_instructions: 56 | # - RUN /usr/bin/apt-get update 57 | - name: ubuntu-22.04 58 | driver: 59 | image: dokken/ubuntu-22.04 60 | pid_one_command: /bin/systemd 61 | intermediate_instructions: 62 | - RUN /usr/bin/apt-get update 63 | 64 | suites: 65 | - name: lwrp_chain_create_default 66 | run_list: 67 | - recipe[iptables_ng_test::lwrp_chain_create_default] 68 | - name: lwrp_chain_create_custom 69 | run_list: 70 | - recipe[iptables_ng_test::lwrp_chain_create_custom] 71 | - name: lwrp_chain_create_if_missing 72 | run_list: 73 | - recipe[iptables_ng_test::lwrp_chain_create_if_missing] 74 | - name: lwrp_chain_create_empty 75 | run_list: 76 | - recipe[iptables_ng_test::lwrp_chain_create_empty] 77 | 78 | - name: lwrp_rule_create_default 79 | run_list: 80 | - recipe[iptables_ng_test::lwrp_rule_create_default] 81 | - name: lwrp_rule_create_custom 82 | run_list: 83 | - recipe[iptables_ng_test::lwrp_rule_create_custom] 84 | - name: lwrp_rule_create_custom_chain 85 | run_list: 86 | - recipe[iptables_ng_test::lwrp_rule_create_custom_chain] 87 | - name: lwrp_rule_create_if_missing 88 | run_list: 89 | - recipe[iptables_ng_test::lwrp_rule_create_if_missing] 90 | - name: lwrp_rule_delete 91 | run_list: 92 | - recipe[iptables_ng_test::lwrp_rule_delete] 93 | - name: lwrp_rule_check_order 94 | run_list: 95 | - recipe[iptables_ng_test::lwrp_rule_check_order] 96 | 97 | - name: default 98 | run_list: 99 | - recipe[iptables_ng_test::recipe_default] 100 | attributes: 101 | iptables-ng: 102 | rules: 103 | filter: 104 | INPUT: 105 | ssh: 106 | rule: '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT' 107 | ipv4_only: 108 | rule: '--protocol tcp --source 1.2.3.4 --dport 123 --jump ACCEPT' 109 | ip_version: 4 110 | OUTPUT: 111 | testrule: 112 | rule: '--protocol icmp --jump ACCEPT' 113 | FORWARD: 114 | default: 'DROP [0:0]' 115 | nat: 116 | POSTROUTING: 117 | nat_test: 118 | rule: '--protocol tcp -j ACCEPT' 119 | mangle: 120 | FORWARD: 121 | default: 'DROP [0:0]' 122 | 123 | - name: install 124 | run_list: 125 | - recipe[iptables_ng_test::recipe_install] 126 | 127 | - name: attribute_enabled_tables 128 | run_list: 129 | - recipe[iptables_ng_test::attribute_enabled_tables] 130 | attributes: 131 | iptables-ng: 132 | enabled_tables: [ 'filter' ] 133 | rules: 134 | filter: 135 | INPUT: 136 | ssh: 137 | rule: '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT' 138 | ipv4_only: 139 | rule: '--protocol tcp --source 1.2.3.4 --dport 123 --jump ACCEPT' 140 | ip_version: 4 141 | nat: 142 | POSTROUTING: 143 | nat_test: 144 | rule: '--protocol tcp -j ACCEPT' 145 | mangle: 146 | FORWARD: 147 | default: 'DROP [0:0]' 148 | -------------------------------------------------------------------------------- /test/integration/default/default_test.rb: -------------------------------------------------------------------------------- 1 | # Should set default filter FORWARD policy to DROP 2 | describe file('/etc/iptables.d/filter/FORWARD/default') do 3 | it { should exist } 4 | its('content') { should match('DROP \[0\:0\]') } 5 | end 6 | 7 | # Should apply default filter FORWARD policy 8 | describe command('iptables -L -n') do 9 | its('stdout') { should match('Chain FORWARD \(policy DROP\)') } 10 | its('exit_status') { should eq 0 } 11 | end 12 | 13 | describe command('ip6tables -L -n') do 14 | its('stdout') { should match('Chain FORWARD \(policy DROP\)') } 15 | its('exit_status') { should eq 0 } 16 | end 17 | 18 | # Should create iptables OUTPUT test_rule 19 | describe file('/etc/iptables.d/filter/OUTPUT/testrule-filter-OUTPUT-attribute-rule.rule_v4') do 20 | it { should exist } 21 | its('content') { should match('--protocol icmp --jump ACCEPT') } 22 | end 23 | 24 | # Should create ip6tables OUTPUT test_rule 25 | describe file('/etc/iptables.d/filter/OUTPUT/testrule-filter-OUTPUT-attribute-rule.rule_v6') do 26 | it { should exist } 27 | its('content') { should match('--protocol icmp --jump ACCEPT') } 28 | end 29 | 30 | # Should apply iptables OUTPUT test_rule 31 | describe command('iptables -L -n') do 32 | its('stdout') { should match(/ACCEPT\s+icmp/) } 33 | its('exit_status') { should eq 0 } 34 | end 35 | 36 | describe command('ip6tables -L -n') do 37 | its('stdout') { should match(/ACCEPT\s+(icmp|1)/) } 38 | its('exit_status') { should eq 0 } 39 | end 40 | 41 | # Should set default mangle FORARD policy to DROP 42 | describe file('/etc/iptables.d/mangle/FORWARD/default') do 43 | it { should exist } 44 | its('content') { should match('DROP \[0\:0\]') } 45 | end 46 | 47 | # Should apply default mangle FORWARD policy 48 | describe command('iptables -t mangle -L -n') do 49 | its('stdout') { should match('Chain FORWARD \(policy DROP\)') } 50 | its('exit_status') { should eq 0 } 51 | end 52 | 53 | describe command('ip6tables -t mangle -L -n') do 54 | its('stdout') { should match('Chain FORWARD \(policy DROP\)') } 55 | its('exit_status') { should eq 0 } 56 | end 57 | 58 | # Should create nat POSTROUTING iptables rule 59 | describe file('/etc/iptables.d/nat/POSTROUTING/nat_test-nat-POSTROUTING-attribute-rule.rule_v4') do 60 | it { should exist } 61 | its('content') { should match('--protocol tcp -j ACCEPT') } 62 | end 63 | 64 | # Should only set custom ip6tables rule for nat chain if ip6tables_nat_support attribute is enabled 65 | describe file('/etc/iptables.d/nat/POSTROUTING/nat_test-nat-POSTROUTING-attribute-rule.rule_v6') do 66 | it { should exist } 67 | its('content') { should match('--protocol tcp -j ACCEPT') } 68 | end 69 | 70 | # Should apply nat POSTROUTING iptables rule 71 | describe command('iptables -t nat -L -n') do 72 | its('stdout') { should match(/ACCEPT\s+tcp/) } 73 | its('exit_status') { should eq 0 } 74 | end 75 | 76 | # Should create SSH iptables rule 77 | describe file('/etc/iptables.d/filter/INPUT/ssh-filter-INPUT-attribute-rule.rule_v4') do 78 | it { should exist } 79 | its('content') { should match('--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT') } 80 | end 81 | 82 | # Should create SSH ip6tables rule 83 | describe file('/etc/iptables.d/filter/INPUT/ssh-filter-INPUT-attribute-rule.rule_v6') do 84 | it { should exist } 85 | its('content') { should match('--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT') } 86 | end 87 | 88 | # Should apply SSH iptables rule 89 | describe command('iptables -L -n') do 90 | its('stdout') { should match('tcp dpt:22 state NEW') } 91 | its('exit_status') { should eq 0 } 92 | end 93 | 94 | describe command('ip6tables -L -n') do 95 | its('stdout') { should match('tcp dpt:22 state NEW') } 96 | its('exit_status') { should eq 0 } 97 | end 98 | 99 | # Should create ipv4_only iptables rule 100 | describe file('/etc/iptables.d/filter/INPUT/ipv4_only-filter-INPUT-attribute-rule.rule_v4') do 101 | it { should exist } 102 | its('content') { should match('--protocol tcp --source 1.2.3.4 --dport 123 --jump ACCEPT') } 103 | end 104 | 105 | # Should not create ipv4_only ip6tables rule 106 | describe file('/etc/iptables.d/filter/INPUT/ipv4_only-filter-INPUT-attribute-rule.rule_v6') do 107 | it { should_not exist } 108 | end 109 | 110 | # Should apply ipv4_only iptables rule 111 | describe command('iptables -L -n') do 112 | its('stdout') { should match('tcp dpt:123') } 113 | its('exit_status') { should eq 0 } 114 | end 115 | 116 | service_ipv4 = case os.family 117 | when 'debian' 118 | 'netfilter-persistent' 119 | else 120 | 'iptables' 121 | end 122 | 123 | service_ipv6 = case os.family 124 | when 'debian' 125 | 'netfilter-persistent' 126 | else 127 | 'ip6tables' 128 | end 129 | 130 | # Should enable iptables serices 131 | describe service(service_ipv4) do 132 | it { should be_enabled } 133 | end 134 | 135 | describe service(service_ipv6) do 136 | it { should be_enabled } 137 | end 138 | -------------------------------------------------------------------------------- /test/integration/install/install_test.rb: -------------------------------------------------------------------------------- 1 | # Should set all default policies to ACCEPT' 2 | 3 | # filter 4 | describe file('/etc/iptables.d/filter/INPUT/default') do 5 | it { should exist } 6 | its('content') { should match('ACCEPT \[0\:0\]') } 7 | end 8 | describe file('/etc/iptables.d/filter/OUTPUT/default') do 9 | it { should exist } 10 | its('content') { should match('ACCEPT \[0\:0\]') } 11 | end 12 | describe file('/etc/iptables.d/filter/FORWARD/default') do 13 | it { should exist } 14 | its('content') { should match('ACCEPT \[0\:0\]') } 15 | end 16 | 17 | # nat 18 | describe file('/etc/iptables.d/nat/OUTPUT/default') do 19 | it { should exist } 20 | its('content') { should match('ACCEPT \[0\:0\]') } 21 | end 22 | describe file('/etc/iptables.d/nat/PREROUTING/default') do 23 | it { should exist } 24 | its('content') { should match('ACCEPT \[0\:0\]') } 25 | end 26 | describe file('/etc/iptables.d/nat/POSTROUTING/default') do 27 | it { should exist } 28 | its('content') { should match('ACCEPT \[0\:0\]') } 29 | end 30 | 31 | # mangle 32 | describe file('/etc/iptables.d/mangle/INPUT/default') do 33 | it { should exist } 34 | its('content') { should match('ACCEPT \[0\:0\]') } 35 | end 36 | describe file('/etc/iptables.d/mangle/OUTPUT/default') do 37 | it { should exist } 38 | its('content') { should match('ACCEPT \[0\:0\]') } 39 | end 40 | describe file('/etc/iptables.d/mangle/FORWARD/default') do 41 | it { should exist } 42 | its('content') { should match('ACCEPT \[0\:0\]') } 43 | end 44 | describe file('/etc/iptables.d/mangle/PREROUTING/default') do 45 | it { should exist } 46 | its('content') { should match('ACCEPT \[0\:0\]') } 47 | end 48 | describe file('/etc/iptables.d/mangle/POSTROUTING/default') do 49 | it { should exist } 50 | its('content') { should match('ACCEPT \[0\:0\]') } 51 | end 52 | 53 | # raw 54 | describe file('/etc/iptables.d/raw/OUTPUT/default') do 55 | it { should exist } 56 | its('content') { should match('ACCEPT \[0\:0\]') } 57 | end 58 | describe file('/etc/iptables.d/raw/PREROUTING/default') do 59 | it { should exist } 60 | its('content') { should match('ACCEPT \[0\:0\]') } 61 | end 62 | 63 | # Should not apply other iptables rules 64 | describe command('iptables -L -n |wc -l') do 65 | its('stdout.strip') { should eq('8') } 66 | its('exit_status') { should eq 0 } 67 | end 68 | 69 | describe command('iptables -L -n -t nat |wc -l') do 70 | its('stdout.strip') { should eq('11') } 71 | its('exit_status') { should eq 0 } 72 | end 73 | 74 | describe command('iptables -L -n -t mangle |wc -l') do 75 | its('stdout.strip') { should eq('14') } 76 | its('exit_status') { should eq 0 } 77 | end 78 | 79 | describe command('iptables -L -n -t raw |wc -l') do 80 | its('stdout.strip') { should eq('5') } 81 | its('exit_status') { should eq 0 } 82 | end 83 | 84 | # Should not apply other ip6tables rules 85 | describe command('ip6tables -L -n |wc -l') do 86 | its('stdout.strip') { should eq('8') } 87 | its('exit_status') { should eq 0 } 88 | end 89 | 90 | describe command('ip6tables -L -n -t mangle |wc -l') do 91 | its('stdout.strip') { should eq('14') } 92 | its('exit_status') { should eq 0 } 93 | end 94 | 95 | describe command('ip6tables -L -n -t raw |wc -l') do 96 | its('stdout.strip') { should eq('5') } 97 | its('exit_status') { should eq 0 } 98 | end 99 | 100 | # Should apply default policies in filter table 101 | describe command('iptables -L -n') do 102 | its('stdout') { should match('Chain INPUT \(policy ACCEPT\)') } 103 | its('stdout') { should match('Chain OUTPUT \(policy ACCEPT\)') } 104 | its('stdout') { should match('Chain FORWARD \(policy ACCEPT\)') } 105 | its('exit_status') { should eq 0 } 106 | end 107 | 108 | describe command('ip6tables -L -n') do 109 | its('stdout') { should match('Chain INPUT \(policy ACCEPT\)') } 110 | its('stdout') { should match('Chain OUTPUT \(policy ACCEPT\)') } 111 | its('stdout') { should match('Chain FORWARD \(policy ACCEPT\)') } 112 | its('exit_status') { should eq 0 } 113 | end 114 | 115 | # Should apply default policies in nat table 116 | describe command('iptables -L -n -t nat') do 117 | its('stdout') { should match('Chain INPUT \(policy ACCEPT\)') } 118 | its('stdout') { should match('Chain OUTPUT \(policy ACCEPT\)') } 119 | its('stdout') { should match('Chain PREROUTING \(policy ACCEPT\)') } 120 | its('stdout') { should match('Chain POSTROUTING \(policy ACCEPT\)') } 121 | its('exit_status') { should eq 0 } 122 | end 123 | 124 | # Should apply default policies in mangle table 125 | describe command('iptables -L -n -t mangle') do 126 | its('stdout') { should match('Chain INPUT \(policy ACCEPT\)') } 127 | its('stdout') { should match('Chain OUTPUT \(policy ACCEPT\)') } 128 | its('stdout') { should match('Chain FORWARD \(policy ACCEPT\)') } 129 | its('stdout') { should match('Chain PREROUTING \(policy ACCEPT\)') } 130 | its('stdout') { should match('Chain POSTROUTING \(policy ACCEPT\)') } 131 | its('exit_status') { should eq 0 } 132 | end 133 | 134 | describe command('ip6tables -L -n -t mangle') do 135 | its('stdout') { should match('Chain INPUT \(policy ACCEPT\)') } 136 | its('stdout') { should match('Chain OUTPUT \(policy ACCEPT\)') } 137 | its('stdout') { should match('Chain FORWARD \(policy ACCEPT\)') } 138 | its('stdout') { should match('Chain PREROUTING \(policy ACCEPT\)') } 139 | its('stdout') { should match('Chain POSTROUTING \(policy ACCEPT\)') } 140 | its('exit_status') { should eq 0 } 141 | end 142 | 143 | # Should apply default policies in raw table 144 | describe command('iptables -L -n -t raw') do 145 | its('stdout') { should match('Chain OUTPUT \(policy ACCEPT\)') } 146 | its('stdout') { should match('Chain PREROUTING \(policy ACCEPT\)') } 147 | its('exit_status') { should eq 0 } 148 | end 149 | 150 | describe command('ip6tables -L -n -t raw') do 151 | its('stdout') { should match('Chain OUTPUT \(policy ACCEPT\)') } 152 | its('stdout') { should match('Chain PREROUTING \(policy ACCEPT\)') } 153 | its('exit_status') { should eq 0 } 154 | end 155 | 156 | service_ipv4 = case os.family 157 | when 'debian' 158 | 'netfilter-persistent' 159 | else 160 | 'iptables' 161 | end 162 | 163 | service_ipv6 = case os.family 164 | when 'debian' 165 | 'netfilter-persistent' 166 | else 167 | 'ip6tables' 168 | end 169 | 170 | # Should enable iptables serices 171 | describe service(service_ipv4) do 172 | it { should be_enabled } 173 | end 174 | 175 | describe service(service_ipv6) do 176 | it { should be_enabled } 177 | end 178 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # iptables-ng Cookbook 2 | 3 | ![Build Status](https://github.com/chr4-cookbooks/iptables-ng/actions/workflows/chef.yml/badge.svg) 4 | 5 | [![Cookbook Version](https://img.shields.io/cookbook/v/iptables-ng.svg)](https://supermarket.chef.io/cookbooks/iptables-ng) 6 | 7 | 8 | This cookbook maintains and installs iptables and ip6tables rules, trying to keep as close to the way the used distribution maintains their rules. 9 | 10 | Contrary to other iptables cookbooks, this cookbook installs iptables and maintains rules using the distributions default configuration files and services (for Debian and Ubuntu, iptables-persistent is used). If the distribution has no service for iptables, it falls back to iptables-restore. 11 | 12 | It provides LWRPs as well as recipes which can handle iptables rules set in the nodes attributes. 13 | 14 | It uses the directory `/etc/iptables.d` to store and maintain its rules. I'm trying to be as compatible as much as possible to all distributions out there. 15 | 16 | 17 | This cookbook is supposed to be able to: 18 | 19 | - Configure iptables rules in a consistent and nice way for all distributions 20 | - Be configured by using LWRPs only 21 | - Be configured by using node attributes only 22 | - Respect the way the currently used distribution stores their rules 23 | - Provide a good-to-read and good-to-maintain way of deploying complex iptables rulesets 24 | - Provide a way of specifying the order of the iptables rules, in case needed 25 | - Only run iptables-restore once during a chef run, and only if something was actually changed 26 | - Support both, ipv6 as well as ipv4 27 | - Be able to assemble iptables rules from different recipes (and even cookbooks), so you can set your iptables rule where you actually configure the service 28 | 29 | I also wrote a [blog post](https://chr4.org/blog/2013/09/13/iptables-ng-cookbook-for-chef) providing further insights. 30 | 31 | 32 | ## Requirements 33 | 34 | The following distribution are best supported, but as this recipe falls back to a generic iptables restore script in case the system is unknown, it should work with every linux distribution supporting iptables. 35 | 36 | * Ubuntu 37 | * Debian 38 | * RHEL 39 | * Gentoo 40 | * Archlinux 41 | 42 | No external dependencies. Just add this line to your `metadata.rb` and you're good to go! 43 | 44 | ```ruby 45 | depends 'iptables-ng' 46 | ``` 47 | 48 | 49 | ## Attributes 50 | 51 | ### General configuration (services, paths) 52 | 53 | While iptables-ng tries to automatically determine the correct settings and defaults for your distribution, it might be necessary to adapt them in certain cases. You can configure the behaviour of iptables-ng using the following attributes: 54 | 55 | ```ruby 56 | # The ip versions to manage iptables for 57 | node['iptables-ng']['enabled_ip_versions'] = [4, 6] 58 | 59 | # Which tables to manage: 60 | # When using a containered setup (OpenVZ, Docker, LXC) it might be 61 | # necessary to remove the "nat" and "raw" tables. 62 | node['iptables-ng']['enabled_tables'] = %w(nat filter mangle raw) 63 | 64 | # An array of packages to install. 65 | # This should install iptables and ip6tables, 66 | # as well as a system service that takes care of reloading the rules 67 | # On Debian and Ubuntu, iptables-persistent is used by default. 68 | node['iptables-ng']['packages'] = %w(iptables) 69 | 70 | # The name of the service that will be used to restart iptables 71 | # By default, the system service of your distribution is used, so don't worry about it unless you 72 | # have special requirements. If iptables-ng can't figure out the default service to use or these 73 | # attributes are set to nil, iptables-ng will fall back to "iptables-restore" 74 | node['iptables-ng']['service_ipv4'] = 'iptables-persistent' 75 | node['iptables-ng']['service_ipv6'] = 'iptables-persistent' 76 | 77 | # The location were the iptables-restore script will be written to 78 | node['iptables-ng']['script_ipv4'] = '/etc/iptables/rules.v4' 79 | node['iptables-ng']['script_ipv6'] = '/etc/iptables/rules.v6' 80 | ``` 81 | 82 | ### Rule configuration 83 | 84 | The use of the LWRPs is recommended, but iptables-ng can be configured using attributes only. 85 | 86 | You can set the default policies of a chain like this 87 | 88 | ```ruby 89 | node['iptables-ng']['rules']['filter']['INPUT']['default'] = 'DROP [0:0]' 90 | ``` 91 | 92 | And also add rules for a chain (this example allows SSH) 93 | 94 | ```ruby 95 | node['iptables-ng']['rules']['filter']['INPUT']['ssh']['rule'] = '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT' 96 | ``` 97 | 98 | You can prioritize your rules, too. This example will make sure that the 'ssh' rule is created before the 'http' rule 99 | 100 | ```ruby 101 | node['iptables-ng']['rules']['filter']['INPUT']['10-ssh']['rule'] = 'this rule is first' 102 | node['iptables-ng']['rules']['filter']['INPUT']['90-http']['rule'] = 'this rule is applied later' 103 | ``` 104 | 105 | Also, it's possible to only apply a rule for a certain ip version. 106 | 107 | ```ruby 108 | node['iptables-ng']['rules']['filter']['INPUT']['10-ssh']['rule'] = '--protocol tcp --source 1.2.3.4 --dport 22 --match state --state NEW --jump ACCEPT' 109 | node['iptables-ng']['rules']['filter']['INPUT']['10-ssh']['ip_version'] = 4 110 | ``` 111 | 112 | ### Auto-pruning 113 | 114 | In Chef, it is generally accepted that removing node attributes does not result in their corresponding resources being proactively scrubbed from the system. However, this could be seen as irritating or even a security risk when dealing with firewall attribute rules in this cookbook. To automatically prune rules for attributes that have been removed, set the following attribute to true. This will not affect rules defined with the LWRP. 115 | 116 | ```ruby 117 | node['iptables-ng']['auto_prune_attribute_rules'] = true 118 | ``` 119 | 120 | # Recipes 121 | 122 | ## default 123 | 124 | The default recipe calls the install recipe, and then configures all rules and policies given in the nodes attribute. 125 | 126 | Example: 127 | 128 | To allow only SSH for incoming connections, add this to your node configuration 129 | 130 | ```json 131 | { 132 | "name": "example.com", 133 | "chef_environment": "_default", 134 | "normal": { 135 | "iptables-ng": { 136 | "rules": { 137 | "filter": { 138 | "INPUT": { 139 | "default": "DROP [0:0]", 140 | "ssh": { 141 | "rule": "--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT" 142 | } 143 | } 144 | } 145 | } 146 | } 147 | }, 148 | "run_list": [ 149 | "recipe[iptables-ng]" 150 | ] 151 | } 152 | ``` 153 | 154 | In case you need a rule for one specific ip version, you can set the "ip_version" attribute. 155 | 156 | ```json 157 | "ssh": { 158 | "rule": "--protocol tcp --source 1.2.3.4 --dport 22 --match state --state NEW --jump ACCEPT", 159 | "ip_version": 4 160 | } 161 | ``` 162 | 163 | You can also delete old rules by specifying a custom action. 164 | 165 | ```json 166 | "ssh": { 167 | "action": "delete" 168 | } 169 | ``` 170 | 171 | 172 | ## install 173 | 174 | The installs recipe installs iptables packages, makes sure that `/etc/iptables.d` is created and sets all default policies to "ACCEPT", unless they are already configured. 175 | 176 | On Debian and Ubuntu systems, it also removes the "ufw" package, as it might interfere with this cookbook. 177 | 178 | *Note: This recipe needs to be run before the LWRPs are used!* 179 | 180 | ```ruby 181 | include_recipe 'iptables-ng::install' 182 | ``` 183 | 184 | 185 | # Providers 186 | 187 | It's recommended to configure iptables-ng using LWRPs in your (wrapper) cookbook. 188 | 189 | All providers take care that iptables is installed (they include the install recipe before running), so you can just use them without worrying whether everything is installed correctly. 190 | 191 | 192 | ## iptables\_ng\_chain 193 | 194 | This provider creates chains and adds their default policies. 195 | 196 | Example: Set the default policy of the filter INPUT chain to ACCEPT: 197 | 198 | ```ruby 199 | iptables_ng_chain 'INPUT' do 200 | policy 'ACCEPT [0:0]' 201 | end 202 | ``` 203 | 204 | Example: Create a custom chain: 205 | 206 | ```ruby 207 | iptables_ng_chain 'MYCHAIN' 208 | ``` 209 | 210 | The following additional attributes are supported: 211 | 212 | ```ruby 213 | iptables_ng_chain 'name' do 214 | chain 'INPUT' # The chain to set the policy for (name_attribute) 215 | table 'filter' # The table to use (defaults to 'filter') 216 | policy 'DROP [0:0]' # The policy to use (defaults to 'ACCEPT [0:0]' for 217 | # build-in chains, to '- [0:0]' for custom ones 218 | 219 | action :create # Supported actions: :create, :create_if_missing, :delete 220 | # Default action: :create 221 | end 222 | ``` 223 | 224 | ## iptables\_ng\_rule 225 | 226 | This provider adds iptables rules 227 | 228 | Example: Allow SSH on the INPUT filter chain 229 | 230 | ```ruby 231 | iptables_ng_rule 'ssh' do 232 | rule '--protocol tcp --dport 22 --match state --state NEW --jump ACCEPT' 233 | end 234 | ``` 235 | 236 | The following additional attributes are supported: 237 | 238 | ```ruby 239 | iptables_ng_rule 'custom' do 240 | name 'my-rule' # Name of the rule. Use "xx-" to prioritize rules. 241 | chain 'INPUT' # Chain to use. Defaults to 'INPUT' (custom chains need to be created using iptables_ng_chain first!) 242 | table 'filter' # Table to use. Defaults to 'filter' 243 | ip_version 4 # Integer or Array of IP versions to create the rules for. 244 | # Defaults to node['iptables-ng']['enabled_ip_versions'] 245 | rule '-j ACCEPT' # String or Array containing the rule(s). (Required) 246 | 247 | action :create # Supported actions: :create, :create_if_missing, :delete 248 | # Default action: :create 249 | end 250 | ``` 251 | 252 | Example: Allow HTTP and HTTPS for a specific IP range only 253 | 254 | ```ruby 255 | iptables_ng_rule 'ssh' do 256 | rule ['--source 192.168.1.0/24 --protocol tcp --dport 80 --match state --state NEW --jump ACCEPT', 257 | '--source 192.168.1.0/24 --protocol tcp --dport 443 --match state --state NEW --jump ACCEPT'] 258 | 259 | # As the source specified above is ipv4, this rule cannot be applied to ip6tables. 260 | # Therefore, setting ip_version to 4 261 | ip_version 4 262 | end 263 | ``` 264 | 265 | Example: Use the same rule for an array of IPs 266 | 267 | ```ruby 268 | ips = %w(10.10.10.1 123.123.123.123 192.168.1.0/24) 269 | 270 | iptables_ng_rule 'multiple_source_addresses' do 271 | rule ips.map { |ip| "--source #{ip} --jump ACCEPT" } 272 | 273 | # As the source specified above is ipv4, this rule cannot be applied to ip6tables. 274 | # Therefore, setting ip_version to 4 275 | ip_version 4 276 | end 277 | ``` 278 | 279 | 280 | # Known issues 281 | 282 | There are some issues with systemd support on Fedora systems. Also it might be required to install iptables-service on newer Fedora machines. 283 | Due to this issues, the tests for Fedora were removed until they are resolved. 284 | Furthermore, due to the lack of Opscode kitchen boxes, there are no tests for Archlinux. 285 | 286 | 287 | # Contributing 288 | 289 | You fixed a bug, or added a new feature? Yippie! 290 | 291 | 1. Fork the repository on Github 292 | 2. Create a named feature branch (like `add_component_x`) 293 | 3. Write you change 294 | 4. Write tests for your change (if applicable) 295 | 5. Run the tests, ensuring they all pass 296 | 6. Submit a Pull Request using Github 297 | 298 | Contributions of any sort are very welcome! 299 | 300 | # License and Authors 301 | 302 | Authors: Chris Aumann 303 | 304 | Contributors: Dan Fruehauf, Nathan Williams, Christian Graf, James Le Cuirot, Sten Spans, Cédric Félizard, Hans Rakers 305 | 306 | 307 | ## Other licenses than GPLv3 308 | 309 | In case you can't use the provided license for some reason, feel free to contact me. 310 | 311 | 312 | Copyright (C) 2013-2018 Chris Aumann 313 | 314 | This program is free software: you can redistribute it and/or modify 315 | it under the terms of the GNU General Public License as published by 316 | the Free Software Foundation, either version 3 of the License, or 317 | (at your option) any later version. 318 | 319 | This program is distributed in the hope that it will be useful, 320 | but WITHOUT ANY WARRANTY; without even the implied warranty of 321 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | iptables-ng, a Chef cookbook to maintain iptables rules and policies on 635 | different platforms, respecting the way the os handles these settings. 636 | 637 | Copyright (C) 2015 Chris Aumann 638 | 639 | This program is free software: you can redistribute it and/or modify 640 | it under the terms of the GNU General Public License as published by 641 | the Free Software Foundation, either version 3 of the License, or 642 | (at your option) any later version. 643 | 644 | This program is distributed in the hope that it will be useful, 645 | but WITHOUT ANY WARRANTY; without even the implied warranty of 646 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 647 | GNU General Public License for more details. 648 | 649 | You should have received a copy of the GNU General Public License 650 | along with this program. If not, see . 651 | 652 | Also add information on how to contact you by electronic and paper mail. 653 | 654 | If the program does terminal interaction, make it output a short 655 | notice like this when it starts in an interactive mode: 656 | 657 | iptables-ng Copyright (C) 2015 Chris Aumann 658 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 659 | This is free software, and you are welcome to redistribute it 660 | under certain conditions; type `show c' for details. 661 | 662 | The hypothetical commands `show w' and `show c' should show the appropriate 663 | parts of the General Public License. Of course, your program's commands 664 | might be different; for a GUI interface, you would use an "about box". 665 | 666 | You should also get your employer (if you work as a programmer) or school, 667 | if any, to sign a "copyright disclaimer" for the program, if necessary. 668 | For more information on this, and how to apply and follow the GNU GPL, see 669 | . 670 | 671 | The GNU General Public License does not permit incorporating your program 672 | into proprietary programs. If your program is a subroutine library, you 673 | may consider it more useful to permit linking proprietary applications with 674 | the library. If this is what you want to do, use the GNU Lesser General 675 | Public License instead of this License. But first, please read 676 | . 677 | --------------------------------------------------------------------------------