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@airtonix
Created January 8, 2024 03:10
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Portforward one or more ports to WSL2

Enable portforwarding for one or more wsl2 ports

chuck these two files in your homedir at

~/Documents/Powershell/Microsoft.PowerShell_profile.ps1
~/Documents/Powershell/bin/Start-Wsl2PortForward.ps1

Protip: Install sudo for windows

winget install gerardog.gsudo

Enable some ports:

sudo Start-Wsl2PortForward.ps1 -Ports 3060,8080,3000
#
# ~/Documents/Powershell/Microsoft.PowerShell_profile.ps1
#
# get reference to the profile file dir
$HEREDIR = Split-Path -Parent $MyInvocation.MyCommand.Path
# add this directory/bin
$env:PATH += ";${HEREDIR}\bin"
#
# ~/Documents/Powershell/bin/Start-Wsl2PortForward.ps1
#
param(
[Parameter(Mandatory = $true)]
[string[]]$Ports
)
If (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
# $arguments = "& '" + $myinvocation.mycommand.definition + "'"
# Start-Process powershell -Verb runAs -ArgumentList $arguments
Write-Warning "This script needs to be run as an administrator."
Break
}
$address =wsl -- ip -o -4 -json addr list eth0 `
| ConvertFrom-Json `
| %{ $_.addr_info.local } `
| ?{ $_ }
$found = $address -match '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
if ( !$found ) {
Write-Output "The Script Exited, the ip address of WSL 2 cannot be found";
exit;
}
$address = $matches[0];
Invoke-Expression "netsh interface portproxy reset";
for ( $i = 0; $i -lt $Ports.Length; $i++ ) {
$port = $Ports[$i];
# port forward
Invoke-Expression "netsh interface portproxy add v4tov4 listenport=$port connectport=$port connectaddress=$address";
# allow firewall access
Invoke-Expression "netsh advfirewall firewall add rule name='WSL2 Port Proxy ${port}' dir=in action=allow protocol=TCP localport=$port";
}
Invoke-Expression "netsh interface portproxy show v4tov4";
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