AsyncTcpScan

Scans an IP Address for open TCP ports using Net.Sockets.TcpClient and Runspaces.

Description

Scanning an IP address for open ports with just Net.Sockets.TcpClient takes time.

By leveraging Runspaces, ports can be scanned using parallel threads.

This method is much faster than techniques leveraging *-Job cmdlets.

Thanks to @BornToBeRoot for posting PowerShell_IPv4PortScanner!

Outputs

System.Object[]

Port        - Destination Port
Status      - True/False
IP          - Destination IP Address
BeginTime   - Job Start Time
EndTime     - Job End Time

Example

Import-Module AsyncTcpScan
Invoke-AsyncTcpScan -IPAddress 10.1.1.1 -TcpPortList $(20..1024)

Example

Invoke-AsyncTcpScan -IPAddress 10.1.1.1 -TcpPortList $(20..2000) -MaxThreads 20

Example

$PortList = '22','25','53','80','88','123','389','443','445','636','3389'
Invoke-AsyncTcpScan -IPAddress 10.1.1.1 -TcpPortList $PortList -WaitTime 500

Example

$PortList = '22','25','53','80','88','123','389','443','445','636','3389'
$Servers = '10.1.1.1','10.1.1.2','10.1.1.3'
$AllResults = $Servers | %{ Invoke-AsyncTcpScan -IPAddress $_ -TcpPortList $PortList }

Reference

https://devblogs.microsoft.com/scripting/beginning-use-of-powershell-runspaces-part-1/