├── Documentation └── Images │ ├── IPv4NetworkScan.png │ └── IPv4NetworkScan_CPUusage.png ├── LICENSE ├── README.md └── Scripts ├── Create-OUIListFromWeb.ps1 ├── IPv4NetworkScan.ps1 └── Resources └── oui.txt /Documentation/Images/IPv4NetworkScan.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/BornToBeRoot/PowerShell_IPv4NetworkScanner/ee650b311f907d7db039fab5772d951423776553/Documentation/Images/IPv4NetworkScan.png -------------------------------------------------------------------------------- /Documentation/Images/IPv4NetworkScan_CPUusage.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/BornToBeRoot/PowerShell_IPv4NetworkScanner/ee650b311f907d7db039fab5772d951423776553/Documentation/Images/IPv4NetworkScan_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. 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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 network scanner 2 | 3 | Powerful asynchronus IPv4 network scanner for PowerShell. 4 | 5 | ## Description 6 | 7 | This powerful asynchronus IPv4 network scanner for PowerShell allows you to scan every IPv4 range you want (172.16.1.47 to 172.16.2.5 would work). But there is also the possibility to scan an entire subnet based on an IPv4 address withing the subnet and a the subnetmask/CIDR. 8 | 9 | The default result will contain the the IPv4 address, status (Up or Down) and the hostname. Other values can be displayed via parameter (Try Get-Help for more details). 10 | 11 | ![Screenshot](Documentation/Images/IPv4NetworkScan.png?raw=true "IPv4NetworkScan") 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/IPv4NetworkScan_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 Port Scanner](https://github.com/BornToBeRoot/PowerShell_IPv4PortScanner). 20 | 21 | ## Syntax 22 | 23 | ```powershell 24 | .\IPv4NetworkScan.ps1 [-StartIPv4Address] [-EndIPv4Address] [[-Tries] ] [[-Threads] ] [[-DisableDNSResolving]] [[-EnableMACResolving]] [[-ExtendedInformations]] [[-IncludeInactive]] [] 25 | 26 | .\IPv4NetworkScan.ps1 [-IPv4Address] [-Mask] [[-Tries] ] [[-Threads] ] [[-DisableDNSResolving]] [[-EnableMACResolving]] [[-ExtendedInformations]] [[-IncludeInactive]] [] 27 | 28 | .\IPv4NetworkScan.ps1 [-IPv4Address] [-CIDR] [[-Tries] ] [[-Threads] ] [[-DisableDNSResolving]] [[-EnableMACResolving]] [[-ExtendedInformations]] [[-IncludeInactive]] [] 29 | ``` 30 | 31 | ## Example 1 32 | 33 | ```powershell 34 | PS> .\IPv4NetworkScan.ps1 -StartIPv4Address 192.168.178.0 -EndIPv4Address 192.168.178.20 35 | 36 | IPv4Address Status Hostname 37 | ----------- ------ -------- 38 | 192.168.178.1 Up fritz.box 39 | ``` 40 | 41 | ## Example 2 42 | 43 | ```powershell 44 | PS> .\IPv4NetworkScan.ps1 -IPv4Address 192.168.178.0 -Mask 255.255.255.0 -DisableDNSResolving 45 | 46 | IPv4Address Status 47 | ----------- ------ 48 | 192.168.178.1 Up 49 | 192.168.178.22 Up 50 | ``` 51 | 52 | ## Example 3 53 | 54 | ```powershell 55 | PS> .\IPv4NetworkScan.ps1 -IPv4Address 192.168.178.0 -CIDR 25 -EnableMACResolving 56 | 57 | IPv4Address Status Hostname MAC Vendor 58 | ----------- ------ -------- --- ------ 59 | 192.168.178.1 Up fritz.box XX-XX-XX-XX-XX-XX AVM Audiovisuelles Marketing und Computersysteme GmbH 60 | 192.168.178.22 Up XXXXX-PC.fritz.box XX-XX-XX-XX-XX-XX ASRock Incorporation 61 | ``` 62 | 63 | -------------------------------------------------------------------------------- /Scripts/Create-OUIListFromWeb.ps1: -------------------------------------------------------------------------------- 1 | #$LatestOUI = Get-Content -Path "$PSScriptRoot\oui_from_web.txt" 2 | $LatestOUIs = (Invoke-WebRequest -Uri "https://standards-oui.ieee.org/oui/oui.txt").Content 3 | 4 | $Output = "" 5 | 6 | foreach($Line in $LatestOUIs -split '[\r\n]') 7 | { 8 | if($Line -match "^[A-F0-9]{6}") 9 | { 10 | # Line looks like: 2405F5 (base 16) Integrated Device Technology (Malaysia) Sdn. Bhd. 11 | $Output += ($Line -replace '\s+', ' ').Replace(' (base 16) ', '|').Trim() + "`n" 12 | } 13 | } 14 | 15 | Out-File -InputObject $Output -FilePath "$PSScriptRoot\Resources\oui.txt" -------------------------------------------------------------------------------- /Scripts/IPv4NetworkScan.ps1: -------------------------------------------------------------------------------- 1 | ############################################################################################################### 2 | # Language : PowerShell 4.0 3 | # Filename : IPv4NetworkScan.ps1 4 | # Autor : BornToBeRoot (https://github.com/BornToBeRoot) 5 | # Description : Powerful asynchronus IPv4 Network Scanner 6 | # Repository : https://github.com/BornToBeRoot/PowerShell_IPv4NetworkScanner 7 | ############################################################################################################### 8 | 9 | <# 10 | .SYNOPSIS 11 | Powerful asynchronus IPv4 Network Scanner 12 | 13 | .DESCRIPTION 14 | This powerful asynchronus IPv4 Network Scanner allows you to scan every IPv4-Range you want (172.16.1.47 to 172.16.2.5 would work). But there is also the possibility to scan an entire subnet based on an IPv4-Address withing the subnet and a the subnetmask/CIDR. 15 | 16 | The default result will contain the the IPv4-Address, Status (Up or Down) and the Hostname. Other values can be displayed via parameter. 17 | 18 | .EXAMPLE 19 | .\IPv4NetworkScan.ps1 -StartIPv4Address 192.168.178.0 -EndIPv4Address 192.168.178.20 20 | 21 | IPv4Address Status Hostname 22 | ----------- ------ -------- 23 | 192.168.178.1 Up fritz.box 24 | 25 | .EXAMPLE 26 | .\IPv4NetworkScan.ps1 -IPv4Address 192.168.178.0 -Mask 255.255.255.0 -DisableDNSResolving 27 | 28 | IPv4Address Status 29 | ----------- ------ 30 | 192.168.178.1 Up 31 | 192.168.178.22 Up 32 | 33 | .EXAMPLE 34 | .\IPv4NetworkScan.ps1 -IPv4Address 192.168.178.0 -CIDR 25 -EnableMACResolving 35 | 36 | IPv4Address Status Hostname MAC Vendor 37 | ----------- ------ -------- --- ------ 38 | 192.168.178.1 Up fritz.box XX-XX-XX-XX-XX-XX AVM Audiovisuelles Marketing und Computersysteme GmbH 39 | 192.168.178.22 Up XXXXX-PC.fritz.box XX-XX-XX-XX-XX-XX ASRock Incorporation 40 | 41 | .LINK 42 | https://github.com/BornToBeRoot/PowerShell_IPv4NetworkScanner/blob/master/README.md 43 | #> 44 | 45 | [CmdletBinding(DefaultParameterSetName = 'CIDR')] 46 | Param( 47 | [Parameter( 48 | ParameterSetName = 'Range', 49 | Position = 0, 50 | Mandatory = $true, 51 | HelpMessage = 'Start IPv4-Address like 192.168.1.10')] 52 | [IPAddress]$StartIPv4Address, 53 | 54 | [Parameter( 55 | ParameterSetName = 'Range', 56 | Position = 1, 57 | Mandatory = $true, 58 | HelpMessage = 'End IPv4-Address like 192.168.1.100')] 59 | [IPAddress]$EndIPv4Address, 60 | 61 | [Parameter( 62 | ParameterSetName = 'CIDR', 63 | Position = 0, 64 | Mandatory = $true, 65 | HelpMessage = 'IPv4-Address which is in the subnet')] 66 | [Parameter( 67 | ParameterSetName = 'Mask', 68 | Position = 0, 69 | Mandatory = $true, 70 | HelpMessage = 'IPv4-Address which is in the subnet')] 71 | [IPAddress]$IPv4Address, 72 | 73 | [Parameter( 74 | ParameterSetName = 'CIDR', 75 | Position = 1, 76 | Mandatory = $true, 77 | HelpMessage = 'CIDR like /24 without "/"')] 78 | [ValidateRange(0, 31)] 79 | [Int32]$CIDR, 80 | 81 | [Parameter( 82 | ParameterSetName = 'Mask', 83 | Position = 1, 84 | Mandatory = $true, 85 | Helpmessage = 'Subnetmask like 255.255.255.0')] 86 | [ValidateScript({ 87 | if ($_ -match "^(254|252|248|240|224|192|128).0.0.0$|^255.(254|252|248|240|224|192|128|0).0.0$|^255.255.(254|252|248|240|224|192|128|0).0$|^255.255.255.(254|252|248|240|224|192|128|0)$") { 88 | return $true 89 | } 90 | else { 91 | throw "Enter a valid subnetmask (like 255.255.255.0)!" 92 | } 93 | })] 94 | [String]$Mask, 95 | 96 | [Parameter( 97 | Position = 2, 98 | HelpMessage = 'Maxmium number of ICMP checks for each IPv4-Address (Default=2)')] 99 | [Int32]$Tries = 2, 100 | 101 | [Parameter( 102 | Position = 3, 103 | HelpMessage = 'Maximum number of threads at the same time (Default=256)')] 104 | [Int32]$Threads = 256, 105 | 106 | [Parameter( 107 | Position = 4, 108 | HelpMessage = 'Resolve DNS for each IP (Default=Enabled)')] 109 | [Switch]$DisableDNSResolving, 110 | 111 | [Parameter( 112 | Position = 5, 113 | HelpMessage = 'Resolve MAC-Address for each IP (Default=Disabled)')] 114 | [Switch]$EnableMACResolving, 115 | 116 | [Parameter( 117 | Position = 6, 118 | HelpMessage = 'Get extendend informations like BufferSize, ResponseTime and TTL (Default=Disabled)')] 119 | [Switch]$ExtendedInformations, 120 | 121 | [Parameter( 122 | Position = 7, 123 | HelpMessage = 'Include inactive devices in result')] 124 | [Switch]$IncludeInactive 125 | ) 126 | 127 | Begin { 128 | Write-Verbose -Message "Script started at $(Get-Date)" 129 | 130 | $OUIListPath = "$PSScriptRoot\Resources\oui.txt" 131 | 132 | function Convert-Subnetmask { 133 | [CmdLetBinding(DefaultParameterSetName = 'CIDR')] 134 | param( 135 | [Parameter( 136 | ParameterSetName = 'CIDR', 137 | Position = 0, 138 | Mandatory = $true, 139 | HelpMessage = 'CIDR like /24 without "/"')] 140 | [ValidateRange(0, 32)] 141 | [Int32]$CIDR, 142 | 143 | [Parameter( 144 | ParameterSetName = 'Mask', 145 | Position = 0, 146 | Mandatory = $true, 147 | HelpMessage = 'Subnetmask like 255.255.255.0')] 148 | [ValidateScript({ 149 | if ($_ -match "^(254|252|248|240|224|192|128).0.0.0$|^255.(254|252|248|240|224|192|128|0).0.0$|^255.255.(254|252|248|240|224|192|128|0).0$|^255.255.255.(255|254|252|248|240|224|192|128|0)$") { 150 | return $true 151 | } 152 | else { 153 | throw "Enter a valid subnetmask (like 255.255.255.0)!" 154 | } 155 | })] 156 | [String]$Mask 157 | ) 158 | 159 | Begin { 160 | 161 | } 162 | 163 | Process { 164 | switch ($PSCmdlet.ParameterSetName) { 165 | "CIDR" { 166 | # Make a string of bits (24 to 11111111111111111111111100000000) 167 | $CIDR_Bits = ('1' * $CIDR).PadRight(32, "0") 168 | 169 | # Split into groups of 8 bits, convert to Ints, join up into a string 170 | $Octets = $CIDR_Bits -split '(.{8})' -ne '' 171 | $Mask = ($Octets | ForEach-Object -Process { [Convert]::ToInt32($_, 2) }) -join '.' 172 | } 173 | 174 | "Mask" { 175 | # Convert the numbers into 8 bit blocks, join them all together, count the 1 176 | $Octets = $Mask.ToString().Split(".") | ForEach-Object -Process { [Convert]::ToString($_, 2) } 177 | $CIDR_Bits = ($Octets -join "").TrimEnd("0") 178 | 179 | # Count the "1" (111111111111111111111111 --> /24) 180 | $CIDR = $CIDR_Bits.Length 181 | } 182 | } 183 | 184 | [pscustomobject] @{ 185 | Mask = $Mask 186 | CIDR = $CIDR 187 | } 188 | } 189 | 190 | End { 191 | 192 | } 193 | } 194 | 195 | # Helper function to convert an IPv4-Address to Int64 and vise versa 196 | function Convert-IPv4Address { 197 | [CmdletBinding(DefaultParameterSetName = 'IPv4Address')] 198 | param( 199 | [Parameter( 200 | ParameterSetName = 'IPv4Address', 201 | Position = 0, 202 | Mandatory = $true, 203 | HelpMessage = 'IPv4-Address as string like "192.168.1.1"')] 204 | [IPaddress]$IPv4Address, 205 | 206 | [Parameter( 207 | ParameterSetName = 'Int64', 208 | Position = 0, 209 | Mandatory = $true, 210 | HelpMessage = 'IPv4-Address as Int64 like 2886755428')] 211 | [long]$Int64 212 | ) 213 | 214 | Begin { 215 | 216 | } 217 | 218 | Process { 219 | switch ($PSCmdlet.ParameterSetName) { 220 | # Convert IPv4-Address as string into Int64 221 | "IPv4Address" { 222 | $Octets = $IPv4Address.ToString().Split(".") 223 | $Int64 = [long]([long]$Octets[0] * 16777216 + [long]$Octets[1] * 65536 + [long]$Octets[2] * 256 + [long]$Octets[3]) 224 | } 225 | 226 | # Convert IPv4-Address as Int64 into string 227 | "Int64" { 228 | $IPv4Address = (([System.Math]::Truncate($Int64 / 16777216)).ToString() + "." + ([System.Math]::Truncate(($Int64 % 16777216) / 65536)).ToString() + "." + ([System.Math]::Truncate(($Int64 % 65536) / 256)).ToString() + "." + ([System.Math]::Truncate($Int64 % 256)).ToString()) 229 | } 230 | } 231 | 232 | [pscustomobject] @{ 233 | IPv4Address = $IPv4Address 234 | Int64 = $Int64 235 | } 236 | } 237 | 238 | End { 239 | 240 | } 241 | } 242 | 243 | # Helper function to create a new Subnet 244 | function Get-IPv4Subnet { 245 | [CmdletBinding(DefaultParameterSetName = 'CIDR')] 246 | param( 247 | [Parameter( 248 | Position = 0, 249 | Mandatory = $true, 250 | HelpMessage = 'IPv4-Address which is in the subnet')] 251 | [IPAddress]$IPv4Address, 252 | 253 | [Parameter( 254 | ParameterSetName = 'CIDR', 255 | Position = 1, 256 | Mandatory = $true, 257 | HelpMessage = 'CIDR like /24 without "/"')] 258 | [ValidateRange(0, 31)] 259 | [Int32]$CIDR, 260 | 261 | [Parameter( 262 | ParameterSetName = 'Mask', 263 | Position = 1, 264 | Mandatory = $true, 265 | Helpmessage = 'Subnetmask like 255.255.255.0')] 266 | [ValidateScript({ 267 | if ($_ -match "^(254|252|248|240|224|192|128).0.0.0$|^255.(254|252|248|240|224|192|128|0).0.0$|^255.255.(254|252|248|240|224|192|128|0).0$|^255.255.255.(254|252|248|240|224|192|128|0)$") { 268 | return $true 269 | } 270 | else { 271 | throw "Enter a valid subnetmask (like 255.255.255.0)!" 272 | } 273 | })] 274 | [String]$Mask 275 | ) 276 | 277 | Begin { 278 | 279 | } 280 | 281 | Process { 282 | # Convert Mask or CIDR - because we need both in the code below 283 | switch ($PSCmdlet.ParameterSetName) { 284 | "CIDR" { 285 | $Mask = (Convert-Subnetmask -CIDR $CIDR).Mask 286 | } 287 | "Mask" { 288 | $CIDR = (Convert-Subnetmask -Mask $Mask).CIDR 289 | } 290 | } 291 | 292 | # Get CIDR Address by parsing it into an IP-Address 293 | $CIDRAddress = [System.Net.IPAddress]::Parse([System.Convert]::ToUInt64(("1" * $CIDR).PadRight(32, "0"), 2)) 294 | 295 | # Binary AND ... this is how subnets work. 296 | $NetworkID_bAND = $IPv4Address.Address -band $CIDRAddress.Address 297 | 298 | # Return an array of bytes. Then join them. 299 | $NetworkID = [System.Net.IPAddress]::Parse([System.BitConverter]::GetBytes([UInt32]$NetworkID_bAND) -join (".")) 300 | 301 | # Get HostBits based on SubnetBits (CIDR) // Hostbits (32 - /24 = 8 -> 00000000000000000000000011111111) 302 | $HostBits = ('1' * (32 - $CIDR)).PadLeft(32, "0") 303 | 304 | # Convert Bits to Int64 305 | $AvailableIPs = [Convert]::ToInt64($HostBits, 2) 306 | 307 | # Convert Network Address to Int64 308 | $NetworkID_Int64 = (Convert-IPv4Address -IPv4Address $NetworkID.ToString()).Int64 309 | 310 | # Convert add available IPs and parse into IPAddress 311 | $Broadcast = [System.Net.IPAddress]::Parse((Convert-IPv4Address -Int64 ($NetworkID_Int64 + $AvailableIPs)).IPv4Address) 312 | 313 | # Change useroutput ==> (/27 = 0..31 IPs -> AvailableIPs 32) 314 | $AvailableIPs += 1 315 | 316 | # Hosts = AvailableIPs - Network Address + Broadcast Address 317 | $Hosts = ($AvailableIPs - 2) 318 | 319 | # Build custom PSObject 320 | [pscustomobject] @{ 321 | NetworkID = $NetworkID 322 | Broadcast = $Broadcast 323 | IPs = $AvailableIPs 324 | Hosts = $Hosts 325 | } 326 | } 327 | 328 | End { 329 | 330 | } 331 | } 332 | } 333 | 334 | Process { 335 | # Calculate Subnet (Start and End IPv4-Address) 336 | if ($PSCmdlet.ParameterSetName -eq 'CIDR' -or $PSCmdlet.ParameterSetName -eq 'Mask') { 337 | # Convert Subnetmask 338 | if ($PSCmdlet.ParameterSetName -eq 'Mask') { 339 | $CIDR = (Convert-Subnetmask -Mask $Mask).CIDR 340 | } 341 | 342 | # Create new subnet 343 | $Subnet = Get-IPv4Subnet -IPv4Address $IPv4Address -CIDR $CIDR 344 | 345 | # Assign Start and End IPv4-Address 346 | $StartIPv4Address = $Subnet.NetworkID 347 | $EndIPv4Address = $Subnet.Broadcast 348 | } 349 | 350 | # Convert Start and End IPv4-Address to Int64 351 | $StartIPv4Address_Int64 = (Convert-IPv4Address -IPv4Address $StartIPv4Address.ToString()).Int64 352 | $EndIPv4Address_Int64 = (Convert-IPv4Address -IPv4Address $EndIPv4Address.ToString()).Int64 353 | 354 | # Check if range is valid 355 | if ($StartIPv4Address_Int64 -gt $EndIPv4Address_Int64) { 356 | Write-Error -Message "Invalid IP-Range... Check your input!" -Category InvalidArgument -ErrorAction Stop 357 | } 358 | 359 | # Calculate IPs to scan (range) 360 | $IPsToScan = ($EndIPv4Address_Int64 - $StartIPv4Address_Int64) 361 | 362 | Write-Verbose -Message "Scanning range from $StartIPv4Address to $EndIPv4Address ($($IPsToScan + 1) IPs)" 363 | Write-Verbose -Message "Running with max $Threads threads" 364 | Write-Verbose -Message "ICMP checks per IP: $Tries" 365 | 366 | # Properties which are displayed in the output 367 | $PropertiesToDisplay = @() 368 | $PropertiesToDisplay += "IPv4Address", "Status" 369 | 370 | if ($DisableDNSResolving -eq $false) { 371 | $PropertiesToDisplay += "Hostname" 372 | } 373 | 374 | if ($EnableMACResolving) { 375 | $PropertiesToDisplay += "MAC" 376 | } 377 | 378 | # Check if it is possible to assign vendor to MAC --> import CSV-File 379 | if ($EnableMACResolving) { 380 | if (Test-Path -Path $OUIListPath -PathType Leaf) { 381 | $OUIHashTable = @{ } 382 | 383 | Write-Verbose -Message "Read oui.txt and fill hash table..." 384 | 385 | foreach ($Line in Get-Content -Path $OUIListPath) { 386 | if (-not([String]::IsNullOrEmpty($Line))) { 387 | try { 388 | $HashTableData = $Line.Split('|') 389 | $OUIHashTable.Add($HashTableData[0], $HashTableData[1]) 390 | } 391 | catch [System.ArgumentException] { } # Catch if mac is already added to hash table 392 | } 393 | } 394 | 395 | $AssignVendorToMAC = $true 396 | 397 | $PropertiesToDisplay += "Vendor" 398 | } 399 | else { 400 | $AssignVendorToMAC = $false 401 | 402 | Write-Warning -Message "No OUI-File to assign vendor with MAC-Address found! Execute the script ""Create-OUIListFromWeb.ps1"" to download the latest version. This warning does not affect the scanning procedure." 403 | } 404 | } 405 | 406 | if ($ExtendedInformations) { 407 | $PropertiesToDisplay += "BufferSize", "ResponseTime", "TTL" 408 | } 409 | 410 | # Scriptblock --> will run in runspaces (threads)... 411 | [System.Management.Automation.ScriptBlock]$ScriptBlock = { 412 | Param( 413 | $IPv4Address, 414 | $Tries, 415 | $DisableDNSResolving, 416 | $EnableMACResolving, 417 | $ExtendedInformations, 418 | $IncludeInactive 419 | ) 420 | 421 | # +++ Send ICMP requests +++ 422 | $Status = [String]::Empty 423 | 424 | for ($i = 0; $i -lt $Tries; i++) { 425 | try { 426 | $PingObj = New-Object System.Net.NetworkInformation.Ping 427 | 428 | $Timeout = 1000 429 | $Buffer = New-Object Byte[] 32 430 | 431 | $PingResult = $PingObj.Send($IPv4Address, $Timeout, $Buffer) 432 | 433 | if ($PingResult.Status -eq "Success") { 434 | $Status = "Up" 435 | break # Exit loop, if host is reachable 436 | } 437 | else { 438 | $Status = "Down" 439 | } 440 | } 441 | catch { 442 | $Status = "Down" 443 | break # Exit loop, if there is an error 444 | } 445 | } 446 | 447 | # +++ Resolve DNS +++ 448 | $Hostname = [String]::Empty 449 | 450 | if ((-not($DisableDNSResolving)) -and ($Status -eq "Up" -or $IncludeInactive)) { 451 | try { 452 | $Hostname = ([System.Net.Dns]::GetHostEntry($IPv4Address).HostName) 453 | } 454 | catch { } # No DNS 455 | } 456 | 457 | # +++ Get MAC-Address +++ 458 | $MAC = [String]::Empty 459 | 460 | if (($EnableMACResolving) -and (($Status -eq "Up") -or ($IncludeInactive))) { 461 | $Arp_Result = (arp -a).ToUpper().Trim() 462 | 463 | foreach ($Line in $Arp_Result) { 464 | if ($Line.Split(" ")[0] -eq $IPv4Address) { 465 | $MAC = [Regex]::Matches($Line, "([0-9A-F][0-9A-F]-){5}([0-9A-F][0-9A-F])").Value 466 | } 467 | } 468 | } 469 | 470 | # +++ Get extended informations +++ 471 | $BufferSize = [String]::Empty 472 | $ResponseTime = [String]::Empty 473 | $TTL = $null 474 | 475 | if ($ExtendedInformations -and ($Status -eq "Up")) { 476 | try { 477 | $BufferSize = $PingResult.Buffer.Length 478 | $ResponseTime = $PingResult.RoundtripTime 479 | $TTL = $PingResult.Options.Ttl 480 | } 481 | catch { } # Failed to get extended informations 482 | } 483 | 484 | # +++ Result +++ 485 | if (($Status -eq "Up") -or ($IncludeInactive)) { 486 | [pscustomobject] @{ 487 | IPv4Address = $IPv4Address 488 | Status = $Status 489 | Hostname = $Hostname 490 | MAC = $MAC 491 | BufferSize = $BufferSize 492 | ResponseTime = $ResponseTime 493 | TTL = $TTL 494 | } 495 | } 496 | else { 497 | $null 498 | } 499 | } 500 | 501 | Write-Verbose -Message "Setting up RunspacePool..." 502 | 503 | # Create RunspacePool and Jobs 504 | $RunspacePool = [System.Management.Automation.Runspaces.RunspaceFactory]::CreateRunspacePool(1, $Threads, $Host) 505 | $RunspacePool.Open() 506 | [System.Collections.ArrayList]$Jobs = @() 507 | 508 | Write-Verbose -Message "Setting up jobs..." 509 | 510 | # Set up jobs for each IP... 511 | for ($i = $StartIPv4Address_Int64; $i -le $EndIPv4Address_Int64; $i++) { 512 | # Convert IP back from Int64 513 | $IPv4Address = (Convert-IPv4Address -Int64 $i).IPv4Address 514 | 515 | # Create hashtable to pass parameters 516 | $ScriptParams = @{ 517 | IPv4Address = $IPv4Address 518 | Tries = $Tries 519 | DisableDNSResolving = $DisableDNSResolving 520 | EnableMACResolving = $EnableMACResolving 521 | ExtendedInformations = $ExtendedInformations 522 | IncludeInactive = $IncludeInactive 523 | } 524 | 525 | # Catch when trying to divide through zero 526 | try { 527 | $Progress_Percent = (($i - $StartIPv4Address_Int64) / $IPsToScan) * 100 528 | } 529 | catch { 530 | $Progress_Percent = 100 531 | } 532 | 533 | Write-Progress -Activity "Setting up jobs..." -Id 1 -Status "Current IP-Address: $IPv4Address" -PercentComplete $Progress_Percent 534 | 535 | # Create new job 536 | $Job = [System.Management.Automation.PowerShell]::Create().AddScript($ScriptBlock).AddParameters($ScriptParams) 537 | $Job.RunspacePool = $RunspacePool 538 | 539 | $JobObj = [pscustomobject] @{ 540 | RunNum = $i - $StartIPv4Address_Int64 541 | Pipe = $Job 542 | Result = $Job.BeginInvoke() 543 | } 544 | 545 | # Add job to collection 546 | [void]$Jobs.Add($JobObj) 547 | } 548 | 549 | Write-Verbose -Message "Waiting for jobs to complete & starting to process results..." 550 | 551 | # Total jobs to calculate percent complete, because jobs are removed after they are processed 552 | $Jobs_Total = $Jobs.Count 553 | 554 | # Process results, while waiting for other jobs 555 | Do { 556 | # Get all jobs, which are completed 557 | $Jobs_ToProcess = $Jobs | Where-Object -FilterScript { $_.Result.IsCompleted } 558 | 559 | # If no jobs finished yet, wait 500 ms and try again 560 | if ($null -eq $Jobs_ToProcess) { 561 | Write-Verbose -Message "No jobs completed, wait 250ms..." 562 | 563 | Start-Sleep -Milliseconds 250 564 | continue 565 | } 566 | 567 | # Get jobs, which are not complete yet 568 | $Jobs_Remaining = ($Jobs | Where-Object -FilterScript { $_.Result.IsCompleted -eq $false }).Count 569 | 570 | # Catch when trying to divide through zero 571 | try { 572 | $Progress_Percent = 100 - (($Jobs_Remaining / $Jobs_Total) * 100) 573 | } 574 | catch { 575 | $Progress_Percent = 100 576 | } 577 | 578 | Write-Progress -Activity "Waiting for jobs to complete... ($($Threads - $($RunspacePool.GetAvailableRunspaces())) of $Threads threads running)" -Id 1 -PercentComplete $Progress_Percent -Status "$Jobs_Remaining remaining..." 579 | 580 | Write-Verbose -Message "Processing $(if($null -eq $Jobs_ToProcess.Count){"1"}else{$Jobs_ToProcess.Count}) job(s)..." 581 | 582 | # Processing completed jobs 583 | foreach ($Job in $Jobs_ToProcess) { 584 | # Get the result... 585 | $Job_Result = $Job.Pipe.EndInvoke($Job.Result) 586 | $Job.Pipe.Dispose() 587 | 588 | # Remove job from collection 589 | $Jobs.Remove($Job) 590 | 591 | # Check if result contains status 592 | if ($Job_Result.Status) { 593 | if ($AssignVendorToMAC) { 594 | $Vendor = [String]::Empty 595 | 596 | # Check if MAC is null or empty 597 | if (-not([String]::IsNullOrEmpty($Job_Result.MAC))) { 598 | # Split it, so we can search the vendor (XX-XX-XX-XX-XX-XX to XXXXXX) 599 | $MAC_VendorSearch = $Job_Result.MAC.Replace("-", "").Substring(0, 6) 600 | 601 | $Vendor = $OUIHashTable.Get_Item($MAC_VendorSearch) 602 | } 603 | 604 | [pscustomobject] @{ 605 | IPv4Address = $Job_Result.IPv4Address 606 | Status = $Job_Result.Status 607 | Hostname = $Job_Result.Hostname 608 | MAC = $Job_Result.MAC 609 | Vendor = $Vendor 610 | BufferSize = $Job_Result.BufferSize 611 | ResponseTime = $Job_Result.ResponseTime 612 | TTL = $ResuJob_Resultlt.TTL 613 | } | Select-Object -Property $PropertiesToDisplay 614 | } 615 | else { 616 | $Job_Result | Select-Object -Property $PropertiesToDisplay 617 | } 618 | } 619 | } 620 | 621 | } While ($Jobs.Count -gt 0) 622 | 623 | Write-Verbose -Message "Closing RunspacePool and free resources..." 624 | 625 | # Close the RunspacePool and free resources 626 | $RunspacePool.Close() 627 | $RunspacePool.Dispose() 628 | 629 | Write-Verbose -Message "Script finished at $(Get-Date)" 630 | } 631 | 632 | End { 633 | 634 | } 635 | --------------------------------------------------------------------------------