├── .gitignore ├── Documentation └── Images │ ├── IPv4PortScan.png │ └── IPv4PortScan_CPUusage.png ├── LICENSE ├── README.md └── Scripts ├── Create-PortListFromWeb.ps1 ├── IPv4PortScan.ps1 └── Resources └── ports.txt /.gitignore: -------------------------------------------------------------------------------- 1 | Documentation/Thumbs.db -------------------------------------------------------------------------------- /Documentation/Images/IPv4PortScan.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/BornToBeRoot/PowerShell_IPv4PortScanner/10c8023d5d24fb28795646c0950891f9b895bb3b/Documentation/Images/IPv4PortScan.png -------------------------------------------------------------------------------- /Documentation/Images/IPv4PortScan_CPUusage.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/BornToBeRoot/PowerShell_IPv4PortScanner/10c8023d5d24fb28795646c0950891f9b895bb3b/Documentation/Images/IPv4PortScan_CPUusage.png -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. By contrast, the GNU General Public 13 | License is intended to guarantee your freedom to share and change free 14 | software--to make sure the software is free for all its users. This 15 | General Public License applies to most of the Free Software 16 | Foundation's software and to any other program whose authors commit to 17 | using it. (Some other Free Software Foundation software is covered by 18 | the GNU Lesser General Public License instead.) You can apply it to 19 | your programs, too. 20 | 21 | When we speak of free software, we are referring to freedom, not 22 | price. Our General Public Licenses are designed to make sure that you 23 | have the freedom to distribute copies of free software (and charge for 24 | this service if you wish), that you receive source code or can get it 25 | if you want it, that you can change the software or use pieces of it 26 | in new free programs; and that you know you can do these things. 27 | 28 | To protect your rights, we need to make restrictions that forbid 29 | anyone to deny you these rights or to ask you to surrender the rights. 30 | These restrictions translate to certain responsibilities for you if you 31 | distribute copies of the software, or if you modify it. 32 | 33 | For example, if you distribute copies of such a program, whether 34 | gratis or for a fee, you must give the recipients all the rights that 35 | you have. You must make sure that they, too, receive or can get the 36 | source code. And you must show them these terms so they know their 37 | rights. 38 | 39 | We protect your rights with two steps: (1) copyright the software, and 40 | (2) offer you this license which gives you legal permission to copy, 41 | distribute and/or modify the software. 42 | 43 | Also, for each author's protection and ours, we want to make certain 44 | that everyone understands that there is no warranty for this free 45 | software. If the software is modified by someone else and passed on, we 46 | want its recipients to know that what they have is not the original, so 47 | that any problems introduced by others will not reflect on the original 48 | authors' reputations. 49 | 50 | Finally, any free program is threatened constantly by software 51 | patents. We wish to avoid the danger that redistributors of a free 52 | program will individually obtain patent licenses, in effect making the 53 | program proprietary. To prevent this, we have made it clear that any 54 | patent must be licensed for everyone's free use or not licensed at all. 55 | 56 | The precise terms and conditions for copying, distribution and 57 | modification follow. 58 | 59 | GNU GENERAL PUBLIC LICENSE 60 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 61 | 62 | 0. This License applies to any program or other work which contains 63 | a notice placed by the copyright holder saying it may be distributed 64 | under the terms of this General Public License. The "Program", below, 65 | refers to any such program or work, and a "work based on the Program" 66 | means either the Program or any derivative work under copyright law: 67 | that is to say, a work containing the Program or a portion of it, 68 | either verbatim or with modifications and/or translated into another 69 | language. (Hereinafter, translation is included without limitation in 70 | the term "modification".) Each licensee is addressed as "you". 71 | 72 | Activities other than copying, distribution and modification are not 73 | covered by this License; they are outside its scope. The act of 74 | running the Program is not restricted, and the output from the Program 75 | is covered only if its contents constitute a work based on the 76 | Program (independent of having been made by running the Program). 77 | Whether that is true depends on what the Program does. 78 | 79 | 1. You may copy and distribute verbatim copies of the Program's 80 | source code as you receive it, in any medium, provided that you 81 | conspicuously and appropriately publish on each copy an appropriate 82 | copyright notice and disclaimer of warranty; keep intact all the 83 | notices that refer to this License and to the absence of any warranty; 84 | and give any other recipients of the Program a copy of this License 85 | along with the Program. 86 | 87 | You may charge a fee for the physical act of transferring a copy, and 88 | you may at your option offer warranty protection in exchange for a fee. 89 | 90 | 2. You may modify your copy or copies of the Program or any portion 91 | of it, thus forming a work based on the Program, and copy and 92 | distribute such modifications or work under the terms of Section 1 93 | above, provided that you also meet all of these conditions: 94 | 95 | a) You must cause the modified files to carry prominent notices 96 | stating that you changed the files and the date of any change. 97 | 98 | b) You must cause any work that you distribute or publish, that in 99 | whole or in part contains or is derived from the Program or any 100 | part thereof, to be licensed as a whole at no charge to all third 101 | parties under the terms of this License. 102 | 103 | c) If the modified program normally reads commands interactively 104 | when run, you must cause it, when started running for such 105 | interactive use in the most ordinary way, to print or display an 106 | announcement including an appropriate copyright notice and a 107 | notice that there is no warranty (or else, saying that you provide 108 | a warranty) and that users may redistribute the program under 109 | these conditions, and telling the user how to view a copy of this 110 | License. (Exception: if the Program itself is interactive but 111 | does not normally print such an announcement, your work based on 112 | the Program is not required to print an announcement.) 113 | 114 | These requirements apply to the modified work as a whole. If 115 | identifiable sections of that work are not derived from the Program, 116 | and can be reasonably considered independent and separate works in 117 | themselves, then this License, and its terms, do not apply to those 118 | sections when you distribute them as separate works. But when you 119 | distribute the same sections as part of a whole which is a work based 120 | on the Program, the distribution of the whole must be on the terms of 121 | this License, whose permissions for other licensees extend to the 122 | entire whole, and thus to each and every part regardless of who wrote it. 123 | 124 | Thus, it is not the intent of this section to claim rights or contest 125 | your rights to work written entirely by you; rather, the intent is to 126 | exercise the right to control the distribution of derivative or 127 | collective works based on the Program. 128 | 129 | In addition, mere aggregation of another work not based on the Program 130 | with the Program (or with a work based on the Program) on a volume of 131 | a storage or distribution medium does not bring the other work under 132 | the scope of this License. 133 | 134 | 3. You may copy and distribute the Program (or a work based on it, 135 | under Section 2) in object code or executable form under the terms of 136 | Sections 1 and 2 above provided that you also do one of the following: 137 | 138 | a) Accompany it with the complete corresponding machine-readable 139 | source code, which must be distributed under the terms of Sections 140 | 1 and 2 above on a medium customarily used for software interchange; or, 141 | 142 | b) Accompany it with a written offer, valid for at least three 143 | years, to give any third party, for a charge no more than your 144 | cost of physically performing source distribution, a complete 145 | machine-readable copy of the corresponding source code, to be 146 | distributed under the terms of Sections 1 and 2 above on a medium 147 | customarily used for software interchange; or, 148 | 149 | c) Accompany it with the information you received as to the offer 150 | to distribute corresponding source code. (This alternative is 151 | allowed only for noncommercial distribution and only if you 152 | received the program in object code or executable form with such 153 | an offer, in accord with Subsection b above.) 154 | 155 | The source code for a work means the preferred form of the work for 156 | making modifications to it. For an executable work, complete source 157 | code means all the source code for all modules it contains, plus any 158 | associated interface definition files, plus the scripts used to 159 | control compilation and installation of the executable. However, as a 160 | special exception, the source code distributed need not include 161 | anything that is normally distributed (in either source or binary 162 | form) with the major components (compiler, kernel, and so on) of the 163 | operating system on which the executable runs, unless that component 164 | itself accompanies the executable. 165 | 166 | If distribution of executable or object code is made by offering 167 | access to copy from a designated place, then offering equivalent 168 | access to copy the source code from the same place counts as 169 | distribution of the source code, even though third parties are not 170 | compelled to copy the source along with the object code. 171 | 172 | 4. You may not copy, modify, sublicense, or distribute the Program 173 | except as expressly provided under this License. Any attempt 174 | otherwise to copy, modify, sublicense or distribute the Program is 175 | void, and will automatically terminate your rights under this License. 176 | However, parties who have received copies, or rights, from you under 177 | this License will not have their licenses terminated so long as such 178 | parties remain in full compliance. 179 | 180 | 5. You are not required to accept this License, since you have not 181 | signed it. However, nothing else grants you permission to modify or 182 | distribute the Program or its derivative works. These actions are 183 | prohibited by law if you do not accept this License. Therefore, by 184 | modifying or distributing the Program (or any work based on the 185 | Program), you indicate your acceptance of this License to do so, and 186 | all its terms and conditions for copying, distributing or modifying 187 | the Program or works based on it. 188 | 189 | 6. Each time you redistribute the Program (or any work based on the 190 | Program), the recipient automatically receives a license from the 191 | original licensor to copy, distribute or modify the Program subject to 192 | these terms and conditions. You may not impose any further 193 | restrictions on the recipients' exercise of the rights granted herein. 194 | You are not responsible for enforcing compliance by third parties to 195 | this License. 196 | 197 | 7. If, as a consequence of a court judgment or allegation of patent 198 | infringement or for any other reason (not limited to patent issues), 199 | conditions are imposed on you (whether by court order, agreement or 200 | otherwise) that contradict the conditions of this License, they do not 201 | excuse you from the conditions of this License. If you cannot 202 | distribute so as to satisfy simultaneously your obligations under this 203 | License and any other pertinent obligations, then as a consequence you 204 | may not distribute the Program at all. For example, if a patent 205 | license would not permit royalty-free redistribution of the Program by 206 | all those who receive copies directly or indirectly through you, then 207 | the only way you could satisfy both it and this License would be to 208 | refrain entirely from distribution of the Program. 209 | 210 | If any portion of this section is held invalid or unenforceable under 211 | any particular circumstance, the balance of the section is intended to 212 | apply and the section as a whole is intended to apply in other 213 | circumstances. 214 | 215 | It is not the purpose of this section to induce you to infringe any 216 | patents or other property right claims or to contest validity of any 217 | such claims; this section has the sole purpose of protecting the 218 | integrity of the free software distribution system, which is 219 | implemented by public license practices. Many people have made 220 | generous contributions to the wide range of software distributed 221 | through that system in reliance on consistent application of that 222 | system; it is up to the author/donor to decide if he or she is willing 223 | to distribute software through any other system and a licensee cannot 224 | impose that choice. 225 | 226 | This section is intended to make thoroughly clear what is believed to 227 | be a consequence of the rest of this License. 228 | 229 | 8. If the distribution and/or use of the Program is restricted in 230 | certain countries either by patents or by copyrighted interfaces, the 231 | original copyright holder who places the Program under this License 232 | may add an explicit geographical distribution limitation excluding 233 | those countries, so that distribution is permitted only in or among 234 | countries not thus excluded. In such case, this License incorporates 235 | the limitation as if written in the body of this License. 236 | 237 | 9. The Free Software Foundation may publish revised and/or new versions 238 | of the General Public License from time to time. Such new versions will 239 | be similar in spirit to the present version, but may differ in detail to 240 | address new problems or concerns. 241 | 242 | Each version is given a distinguishing version number. If the Program 243 | specifies a version number of this License which applies to it and "any 244 | later version", you have the option of following the terms and conditions 245 | either of that version or of any later version published by the Free 246 | Software Foundation. If the Program does not specify a version number of 247 | this License, you may choose any version ever published by the Free Software 248 | Foundation. 249 | 250 | 10. If you wish to incorporate parts of the Program into other free 251 | programs whose distribution conditions are different, write to the author 252 | to ask for permission. For software which is copyrighted by the Free 253 | Software Foundation, write to the Free Software Foundation; we sometimes 254 | make exceptions for this. Our decision will be guided by the two goals 255 | of preserving the free status of all derivatives of our free software and 256 | of promoting the sharing and reuse of software generally. 257 | 258 | NO WARRANTY 259 | 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 266 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268 | REPAIR OR CORRECTION. 269 | 270 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278 | POSSIBILITY OF SUCH DAMAGES. 279 | 280 | END OF TERMS AND CONDITIONS 281 | 282 | How to Apply These Terms to Your New Programs 283 | 284 | If you develop a new program, and you want it to be of the greatest 285 | possible use to the public, the best way to achieve this is to make it 286 | free software which everyone can redistribute and change under these terms. 287 | 288 | To do so, attach the following notices to the program. It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | {description} 294 | Copyright (C) {year} {fullname} 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | {signature of Ty Coon}, 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | 341 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # PowerShell | IPv4 port scanner 2 | 3 | Powerful asynchronus IPv4 port scanner for PowerShell. 4 | 5 | ## Description 6 | 7 | This powerful asynchronus IPv4 port scanner allows you to scan every port range you want (500 to 2600 would work). Only TCP ports are scanned. 8 | 9 | The result will contain the port number, protocol, service name, description and the status. 10 | 11 | ![Screenshot](Documentation/Images/IPv4PortScan.png?raw=true "IPv4PortScan") 12 | 13 | To reach the best possible performance, this script uses a [RunspacePool](https://msdn.microsoft.com/en-US/library/system.management.automation.runspaces.runspacepool(v=vs.85).aspx). As you can see in the following screenshot, the individual tasks are distributed across all cpu cores: 14 | 15 | ![Screenshot](Documentation/Images/IPv4PortScan_CPUusage.png?raw=true "CPU usage") 16 | 17 | If you are looking for a module containing this script as function... you can find it [here](https://github.com/BornToBeRoot/PowerShell)! 18 | 19 | Maybe you're also interested in my asynchronus [IPv4 Network Scanner](https://github.com/BornToBeRoot/PowerShell_IPv4NetworkScanner). 20 | 21 | ## Syntax 22 | 23 | ```powershell 24 | .\IPv4PortScan.ps1 [-ComputerName] [[-StartPort] ] [[-EndPort] ] [[-Threads] ] [[-Force]] [] 25 | ``` 26 | 27 | ## Example 28 | 29 | ```powershell 30 | PS> .\IPv4PortScan.ps1 -ComputerName fritz.box -EndPort 500 31 | 32 | Port Protocol ServiceName ServiceDescription Status 33 | ---- -------- ----------- ------------------ ------ 34 | 53 tcp domain Domain Name Server open 35 | 80 tcp http World Wide Web HTTP open 36 | ``` 37 | -------------------------------------------------------------------------------- /Scripts/Create-PortListFromWeb.ps1: -------------------------------------------------------------------------------- 1 | #[xml]$LatestPorts = Get-Content -Path "$PSScriptRoot\Service Name and Transport Protocol Port Number Registry.xml" 2 | [xml]$LatestPorts = (Invoke-WebRequest -Uri "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xml").Content 3 | 4 | $Output = "" 5 | 6 | foreach($record in $LatestPorts.ChildNodes.record) 7 | { 8 | if([string]::IsNullOrEmpty($record.number) -or ([string]::IsNullOrEmpty($record.protocol))) 9 | { 10 | continue 11 | } 12 | 13 | $Description = ($record.description -replace '`n','') -replace '\s+',' ' 14 | 15 | $Number = $record.number 16 | 17 | if($Number -like "*-*") 18 | { 19 | $NumberArr = $Number.Split('-') 20 | 21 | foreach($Number1 in $NumberArr[0]..$NumberArr[1]) 22 | { 23 | $Output += "$Number1|$($record.protocol)|$($record.name)|$Description`n" 24 | } 25 | } 26 | else 27 | { 28 | $Output += "$Number|$($record.protocol)|$($record.name)|$Description`n" 29 | } 30 | } 31 | 32 | Out-File -InputObject $Output -FilePath "$PSScriptRoot\Resources\ports.txt" -------------------------------------------------------------------------------- /Scripts/IPv4PortScan.ps1: -------------------------------------------------------------------------------- 1 | ############################################################################################################### 2 | # Language : PowerShell 4.0 3 | # Filename : IPv4PortScan.ps1 4 | # Autor : BornToBeRoot (https://github.com/BornToBeRoot) 5 | # Description : Powerful asynchronus IPv4 Port Scanner 6 | # Repository : https://github.com/BornToBeRoot/PowerShell_IPv4PortScanner 7 | ############################################################################################################### 8 | 9 | <# 10 | .SYNOPSIS 11 | Powerful asynchronus IPv4 Port Scanner 12 | 13 | .DESCRIPTION 14 | This powerful asynchronus IPv4 Port Scanner allows you to scan every Port-Range you want (500 to 2600 would work). Only TCP-Ports are scanned. 15 | 16 | The result will contain the Port number, Protocol, Service name, Description and the Status. 17 | 18 | .EXAMPLE 19 | .\IPv4PortScan.ps1 -ComputerName fritz.box -EndPort 500 20 | 21 | Port Protocol ServiceName ServiceDescription Status 22 | ---- -------- ----------- ------------------ ------ 23 | 53 tcp domain Domain Name Server open 24 | 80 tcp http World Wide Web HTTP open 25 | 26 | .LINK 27 | https://github.com/BornToBeRoot/PowerShell_IPv4PortScanner/blob/master/README.md 28 | #> 29 | 30 | [CmdletBinding()] 31 | param( 32 | [Parameter( 33 | Position = 0, 34 | Mandatory = $true, 35 | HelpMessage = 'ComputerName or IPv4-Address of the device which you want to scan')] 36 | [String]$ComputerName, 37 | 38 | [Parameter( 39 | Position = 1, 40 | HelpMessage = 'First port which should be scanned (Default=1)')] 41 | [ValidateRange(1, 65535)] 42 | [Int32]$StartPort = 1, 43 | 44 | [Parameter( 45 | Position = 2, 46 | HelpMessage = 'Last port which should be scanned (Default=65535)')] 47 | [ValidateRange(1, 65535)] 48 | [ValidateScript({ 49 | if ($_ -lt $StartPort) { 50 | throw "Invalid Port-Range!" 51 | } 52 | else { 53 | return $true 54 | } 55 | })] 56 | [Int32]$EndPort = 65535, 57 | 58 | [Parameter( 59 | Position = 3, 60 | HelpMessage = 'Maximum number of threads at the same time (Default=500)')] 61 | [Int32]$Threads = 500, 62 | 63 | [Parameter( 64 | Position = 4, 65 | HelpMessage = 'Execute script without user interaction')] 66 | [switch]$Force 67 | ) 68 | 69 | Begin { 70 | Write-Verbose -Message "Script started at $(Get-Date)" 71 | 72 | $PortList_Path = "$PSScriptRoot\Resources\ports.txt" 73 | } 74 | 75 | Process { 76 | if (Test-Path -Path $PortList_Path -PathType Leaf) { 77 | $PortsHashTable = @{ } 78 | 79 | Write-Verbose -Message "Read ports.txt and fill hash table..." 80 | 81 | foreach ($Line in Get-Content -Path $PortList_Path) { 82 | if (-not([String]::IsNullOrEmpty($Line))) { 83 | try { 84 | $HashTableData = $Line.Split('|') 85 | 86 | if ($HashTableData[1] -eq "tcp") { 87 | $PortsHashTable.Add([int]$HashTableData[0], [String]::Format("{0}|{1}", $HashTableData[2], $HashTableData[3])) 88 | } 89 | } 90 | catch [System.ArgumentException] { } # Catch if port is already added to hash table 91 | } 92 | } 93 | 94 | $AssignServiceWithPort = $true 95 | } 96 | else { 97 | $AssignServiceWithPort = $false 98 | 99 | Write-Warning -Message "No port-file to assign service with port found! Execute the script ""Create-PortListFromWeb.ps1"" to download the latest version.. This warning doesn`t affect the scanning procedure." 100 | } 101 | 102 | # Check if host is reachable 103 | Write-Verbose -Message "Test if host is reachable..." 104 | if (-not(Test-Connection -ComputerName $ComputerName -Count 2 -Quiet)) { 105 | Write-Warning -Message "$ComputerName is not reachable!" 106 | 107 | if ($Force -eq $false) { 108 | $Title = "Continue" 109 | $Info = "Would you like to continue? (perhaps only ICMP is blocked)" 110 | 111 | $Options = [System.Management.Automation.Host.ChoiceDescription[]] @("&Yes", "&No") 112 | [int]$DefaultChoice = 0 113 | $Opt = $host.UI.PromptForChoice($Title , $Info, $Options, $DefaultChoice) 114 | 115 | switch ($Opt) { 116 | 1 { 117 | return 118 | } 119 | } 120 | } 121 | } 122 | 123 | $PortsToScan = ($EndPort - $StartPort) 124 | 125 | Write-Verbose -Message "Scanning range from $StartPort to $EndPort ($PortsToScan Ports)" 126 | Write-Verbose -Message "Running with max $Threads threads" 127 | 128 | # Check if ComputerName is already an IPv4-Address, if not... try to resolve it 129 | $IPv4Address = [String]::Empty 130 | 131 | if ([bool]($ComputerName -as [IPAddress])) { 132 | $IPv4Address = $ComputerName 133 | } 134 | else { 135 | # Get IP from Hostname (IPv4 only) 136 | try { 137 | $AddressList = @(([System.Net.Dns]::GetHostEntry($ComputerName)).AddressList) 138 | 139 | foreach ($Address in $AddressList) { 140 | if ($Address.AddressFamily -eq "InterNetwork") { 141 | $IPv4Address = $Address.IPAddressToString 142 | break 143 | } 144 | } 145 | } 146 | catch { } # Can't get IPAddressList 147 | 148 | if ([String]::IsNullOrEmpty($IPv4Address)) { 149 | throw "Could not get IPv4-Address for $ComputerName. (Try to enter an IPv4-Address instead of the Hostname)" 150 | } 151 | } 152 | 153 | # Scriptblock --> will run in runspaces (threads)... 154 | [System.Management.Automation.ScriptBlock]$ScriptBlock = { 155 | Param( 156 | $IPv4Address, 157 | $Port 158 | ) 159 | 160 | try { 161 | $Socket = New-Object System.Net.Sockets.TcpClient($IPv4Address, $Port) 162 | 163 | if ($Socket.Connected) { 164 | $Status = "Open" 165 | $Socket.Close() 166 | } 167 | else { 168 | $Status = "Closed" 169 | } 170 | } 171 | catch { 172 | $Status = "Closed" 173 | } 174 | 175 | if ($Status -eq "Open") { 176 | [pscustomobject] @{ 177 | Port = $Port 178 | Protocol = "tcp" 179 | Status = $Status 180 | } 181 | } 182 | } 183 | 184 | Write-Verbose -Message "Setting up RunspacePool..." 185 | 186 | # Create RunspacePool and Jobs 187 | $RunspacePool = [System.Management.Automation.Runspaces.RunspaceFactory]::CreateRunspacePool(1, $Threads, $Host) 188 | $RunspacePool.Open() 189 | [System.Collections.ArrayList]$Jobs = @() 190 | 191 | Write-Verbose -Message "Setting up Jobs..." 192 | 193 | #Set up job for each port... 194 | foreach ($Port in $StartPort..$EndPort) { 195 | $ScriptParams = @{ 196 | IPv4Address = $IPv4Address 197 | Port = $Port 198 | } 199 | 200 | # Catch when trying to divide through zero 201 | try { 202 | $Progress_Percent = (($Port - $StartPort) / $PortsToScan) * 100 203 | } 204 | catch { 205 | $Progress_Percent = 100 206 | } 207 | 208 | Write-Progress -Activity "Setting up jobs..." -Id 1 -Status "Current Port: $Port" -PercentComplete ($Progress_Percent) 209 | 210 | # Create mew job 211 | $Job = [System.Management.Automation.PowerShell]::Create().AddScript($ScriptBlock).AddParameters($ScriptParams) 212 | $Job.RunspacePool = $RunspacePool 213 | 214 | $JobObj = [pscustomobject] @{ 215 | RunNum = $Port - $StartPort 216 | Pipe = $Job 217 | Result = $Job.BeginInvoke() 218 | } 219 | 220 | # Add job to collection 221 | [void]$Jobs.Add($JobObj) 222 | } 223 | 224 | Write-Verbose -Message "Waiting for jobs to complete & starting to process results..." 225 | 226 | # Total jobs to calculate percent complete, because jobs are removed after they are processed 227 | $Jobs_Total = $Jobs.Count 228 | 229 | # Process results, while waiting for other jobs 230 | Do { 231 | # Get all jobs, which are completed 232 | $Jobs_ToProcess = $Jobs | Where-Object -FilterScript { $_.Result.IsCompleted } 233 | 234 | # If no jobs finished yet, wait 500 ms and try again 235 | if ($null -eq $Jobs_ToProcess) { 236 | Write-Verbose -Message "No jobs completed, wait 500ms..." 237 | 238 | Start-Sleep -Milliseconds 500 239 | continue 240 | } 241 | 242 | # Get jobs, which are not complete yet 243 | $Jobs_Remaining = ($Jobs | Where-Object -FilterScript { $_.Result.IsCompleted -eq $false }).Count 244 | 245 | # Catch when trying to divide through zero 246 | try { 247 | $Progress_Percent = 100 - (($Jobs_Remaining / $Jobs_Total) * 100) 248 | } 249 | catch { 250 | $Progress_Percent = 100 251 | } 252 | 253 | Write-Progress -Activity "Waiting for jobs to complete... ($($Threads - $($RunspacePool.GetAvailableRunspaces())) of $Threads threads running)" -Id 1 -PercentComplete $Progress_Percent -Status "$Jobs_Remaining remaining..." 254 | 255 | Write-Verbose -Message "Processing $(if($null -eq $Jobs_ToProcess.Count){"1"}else{$Jobs_ToProcess.Count}) job(s)..." 256 | 257 | # Processing completed jobs 258 | foreach ($Job in $Jobs_ToProcess) { 259 | # Get the result... 260 | $Job_Result = $Job.Pipe.EndInvoke($Job.Result) 261 | $Job.Pipe.Dispose() 262 | 263 | # Remove job from collection 264 | $Jobs.Remove($Job) 265 | 266 | # Check if result is null --> if not, return it 267 | if ($Job_Result.Status) { 268 | if ($AssignServiceWithPort) { 269 | $Service = [String]::Empty 270 | 271 | if ($PortsHashTable.Get_Item($Job_Result.Port)) { 272 | $Service = $PortsHashTable.Get_Item($Job_Result.Port).Split('|') 273 | } 274 | else { 275 | $Service = @("Unknown", "Unknown") 276 | } 277 | 278 | [pscustomobject] @{ 279 | Port = $Job_Result.Port 280 | Protocol = $Job_Result.Protocol 281 | ServiceName = $Service[0] 282 | ServiceDescription = $Service[1] 283 | Status = $Job_Result.Status 284 | } 285 | } 286 | else { 287 | $Job_Result 288 | } 289 | } 290 | } 291 | 292 | } While ($Jobs.Count -gt 0) 293 | 294 | Write-Verbose -Message "Closing RunspacePool and free resources..." 295 | 296 | # Close the RunspacePool and free resources 297 | $RunspacePool.Close() 298 | $RunspacePool.Dispose() 299 | 300 | Write-Verbose -Message "Script finished at $(Get-Date)" 301 | } 302 | 303 | End { 304 | 305 | } 306 | --------------------------------------------------------------------------------