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Test-Port.ps1
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Test-Port.ps1
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function Test-Port {
<#
.SYNOPSIS
Tests port on computer.
.DESCRIPTION
Performing test(s) if port(s) on remote computer(s) is/are open or not. Test is performed by opening the connection using selected protocol TCP/UDP or both.
.PARAMETER computer
Name of server to test port state
.PARAMETER port
Port to test
.PARAMETER tcp
Use TCP protocol. If any protocol is not selected than TCP is used.
.PARAMETER udp
Use UDP protocol. If any protocol is not selected than TCP is used.
.PARAMETER UDPTimeOut
Sets a timeout for UDP port query. (In milliseconds, Default is 1000)
.PARAMETER TCPTimeOut
Sets a timeout for TCP port query. (In milliseconds, Default is 1000)
.PARAMETER LocalIP
Local IP address used to probe. If not specified any - generally based on a route table - will be used.
.NOTES
Name: Test-Port.ps1
Author: Boe Prox
Updated by: Wojciech Sciesinski, https://www.linkedin.com/in/sciesinskiwojciech
DateCreated: 18Aug2010
Version: 20160519a
List of Ports: https://www.iana.org/assignments/port-numbers
To Do:
Add capability to run background jobs for each host to shorten the time to scan.
.LINK
https://boeprox.wordpress.org
.LINK
https://github.com/proxb/PowerShell_Scripts
.EXAMPLE
Test-Port -computer 'server' -port 80
Server : server
Port : 3389
TypePort : TCP
Open : True
LocalIP : 0.0.0.0
Notes :
Checks port 3389 on server 'server' to see if it is listening
.EXAMPLE
'server' | Test-Port -port 80
Server : server
Port : 80
TypePort : TCP
Open : True
LocalIP : 0.0.0.0
Notes :
Checks port 80 on server 'server' to see if it is listening
.EXAMPLE
Test-Port -computer @("server1","server2") -port 80
Server : server1
Port : 80
TypePort : TCP
Open : True
LocalIP : 0.0.0.0
Notes :
Server : server2
Port : 80
TypePort : TCP
Open : False
LocalIP : 0.0.0.0
Notes : Connection to Port Timed Out
Checks port 80 on server1 and server2 to see if it is listening.
.EXAMPLE
Test-Port -comp dc1 -port 17 -udp -UDPtimeout 10000
Server : dc1
Port : 17
TypePort : UDP
Open : True
LocalIP : 0.0.0.0
Notes :
Queries port 17 (qotd) using the UDP protocol and returns whether port is open or not.
.EXAMPLE
Test-Port -Computer server3 -Port 53 -UDP -LocalIP 192.168.13.2
Server : server3
Port : 53
TypePort : UDP
Open : True
LocalIP : 192.168.13.2
Notes :
Checks port 53 using the UDP protocol on destination computer with the name server3 using as a source interface with IP address 192.168.13.2 assigned
.EXAMPLE
@("server1","server2") | Test-Port -port 80
Checks port 80 on server1 and server2 to see if it is listening.
.EXAMPLE
(Get-Content hosts.txt) | Test-Port -port 80
Checks port 80 on servers in host file to see if it is listening.
.EXAMPLE
Test-Port -computer (Get-Content hosts.txt) -port 80
Checks port 80 on servers in host file to see if it is listening
.EXAMPLE
Test-Port -computer (Get-Content hosts.txt) -port @(1..59)
Checks a range of ports from 1-59 on all servers in the hosts.txt file
#>
[cmdletbinding(
DefaultParameterSetName = '',
ConfirmImpact = 'low'
)]
Param (
[Parameter(
Mandatory = $True,
Position = 0,
ParameterSetName = '',
ValueFromPipeline = $True)]
[array]$computer,
[Parameter(
Position = 1,
Mandatory = $True,
ParameterSetName = '')]
[ValidateRange(0, 65535)]
[array]$port,
[Parameter(
Mandatory = $False,
ParameterSetName = '')]
[int]$TCPtimeout = 1000,
[Parameter(
Mandatory = $False,
ParameterSetName = '')]
[int]$UDPtimeout = 1000,
[Parameter(
Mandatory = $False,
ParameterSetName = '')]
[switch]$TCP,
[Parameter(
Mandatory = $False,
ParameterSetName = '')]
[switch]$UDP,
[Parameter(
Mandatory = $False,
ParameterSetName = '')]
[ipaddress]$LocalIP
)
Begin {
If (!$tcp -AND !$udp) { $tcp = $True }
#Typically you never do this, but in this case I felt it was for the benefit of the function
#as any errors will be noted in the output of the report
#$ErrorActionPreference = "SilentlyContinue"
$report = New-Object System.Collections.ArrayList
}
Process {
ForEach ($c in $computer) {
ForEach ($p in $port) {
If ($tcp) {
#Create temporary holder
$temp = "" | Select-Object -Property Server, Port, TypePort, Open, LocalIP, Notes
#If LocalIP value is provided create IPEndPoint object
# and use it in the constructor Socket constractor
If ($LocalIP) {
#Create object for connecting to port on computer, provided local IP is used as source
$EndPoint = New-Object System.Net.IPEndPoint ($LocalIP, 0)
Try {
$tcpobject = new-Object Net.Sockets.TcpClient $EndPoint -ErrorAction Continue
}
Catch {
[String]$MessageText = "Network address {0} is not available on the local computer." -f $LocalIP
Throw $MessageText
}
$tempLocalIP = $LocalIP
#If LocalIP value is not provide use any local IP
}
Else {
#Create object for connecting to port on computer
$tcpobject = new-Object system.Net.Sockets.TcpClient
[ipaddress]$tempLocalIP = "0.0.0.0"
}
#Connect to remote machine's port
$connect = $tcpobject.BeginConnect($c, $p, $null, $null)
$connec.s
#Configure a timeout before quitting
$wait = $connect.AsyncWaitHandle.WaitOne($TCPtimeout, $false)
#If timeout
If (!$wait) {
#Close connection
$tcpobject.Close()
Write-Verbose "Connection Timeout"
#Build report
$temp.Server = $c
$temp.Port = $p
$temp.TypePort = "TCP"
$temp.Open = $False
$temp.LocalIP = $tempLocalIP
$temp.Notes = "Connection to Port Timed Out"
}
Else {
$error.Clear()
$tcpobject.EndConnect($connect) | out-Null
#If error
If ($error[0]) {
#Begin making error more readable in report
[string]$string = ($error[0].exception).message
$message = (($string.split(":")[1]).replace('"', "")).TrimStart()
$failed = $true
}
#Close connection
$tcpobject.Close()
#If unable to query port to due failure
If ($failed) {
#Build report
$temp.Server = $c
$temp.Port = $p
$temp.TypePort = "TCP"
$temp.Open = $False
$temp.LocalIP = $tempLocalIP
$temp.Notes = "$message"
}
Else {
#Build report
$temp.Server = $c
$temp.Port = $p
$temp.TypePort = "TCP"
$temp.Open = $True
$temp.LocalIP = $tempLocalIP
$temp.Notes = ""
}
}
#Reset failed value
$failed = $Null
#Merge temp array with report
$report.add($temp) | Out-Null
}
If ($udp) {
#Create temporary holder
$temp = "" | Select-Object -Property Server, Port, TypePort, Open, LocalIP, Notes
#If LocalIP value is provided create IPEndPoint object
# and use it in the constructor Socket constractor
If ($LocalIP) {
#Create object for connecting to port on computer, provided local IP is used as source
$EndPoint = New-Object System.Net.IPEndPoint ($LocalIP, 0)
Try {
$udpobject = new-Object Net.Sockets.Udpclient $EndPoint -ErrorAction Continue
}
Catch {
[String]$MessageText = "Network address {0} is not available on the local computer." -f $LocalIP
Throw $MessageText
}
$tempLocalIP = $LocalIP
#If LocalIP value is not provide use any local IP
}
Else {
#Create object for connecting to port on computer, any local IP is used
$udpobject = new-Object system.Net.Sockets.Udpclient
[ipaddress]$tempLocalIP = "0.0.0.0"
}
#Set a timeout on receiving message
$udpobject.client.ReceiveTimeout = $UDPTimeout
#Connect to remote machine's port
Write-Verbose "Making UDP connection to remote server"
$udpobject.Connect("$c", $p)
#Sends a message to the host to which you have connected.
Write-Verbose "Sending message to remote host"
$a = new-object system.text.asciiencoding
$byte = $a.GetBytes("$(Get-Date)")
[void]$udpobject.Send($byte, $byte.length)
#IPEndPoint object will allow us to read datagrams sent from any source.
Write-Verbose "Creating remote endpoint"
$remoteendpoint = New-Object system.net.ipendpoint([system.net.ipaddress]::Any, 0)
Try {
#Blocks until a message returns on this socket from a remote host.
Write-Verbose "Waiting for message return"
$receivebytes = $udpobject.Receive([ref]$remoteendpoint)
[string]$returndata = $a.GetString($receivebytes)
If ($returndata) {
Write-Verbose "Connection Successful"
#Build report
$temp.Server = $c
$temp.Port = $p
$temp.TypePort = "UDP"
$temp.Open = $True
$temp.LocalIP = $tempLocalIP
$temp.Notes = $returndata
$udpobject.close()
}
}
Catch {
If ($Error[0].ToString() -match "\bRespond after a period of time\b") {
#Close connection
$udpobject.Close()
#Make sure that the host is online and not a false positive that it is open
If (Test-Connection -comp $c -count 1 -quiet) {
Write-Verbose "Connection Open"
#Build report
$temp.Server = $c
$temp.Port = $p
$temp.TypePort = "UDP"
$temp.Open = $True
$temp.LocalIP = $tempLocalIP
$temp.Notes = ""
}
Else {
<#
It is possible that the host is not online or that the host is online,
but ICMP is blocked by a firewall and this port is actually open.
#>
Write-Verbose "Host maybe unavailable"
#Build report
$temp.Server = $c
$temp.Port = $p
$temp.TypePort = "UDP"
$temp.Open = $False
$temp.LocalIP = $tempLocalIP
$temp.Notes = "Unable to verify if port is open or if host is unavailable."
}
}
ElseIf ($Error[0].ToString() -match "forcibly closed by the remote host") {
#Close connection
$udpobject.Close()
Write-Verbose "Connection Timeout"
#Build report
$temp.Server = $c
$temp.Port = $p
$temp.TypePort = "UDP"
$temp.Open = $False
$temp.LocalIP = $tempLocalIP
$temp.Notes = "Connection to Port Timed Out"
}
Else {
$udpobject.close()
}
}
#Merge temp array with report
$report.add($temp) | out-null
}
}
}
}
End {
#Generate Report
Return $report
}
}