WSL Portforwarding

partial-profile.ps1

# Stick this in your ps profile c:/Users/you/Documents/WindowsPowerShell/profile.ps1

function wsl-add-port-forward {
    param ($param1)
    if (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")){
        echo "This function needs to be run as Administrator"
        break
    }
    $remoteport = bash.exe -c "ip -4 addr show eth0 | grep -Eo '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -v .255"
    $found = $remoteport -match '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';

    if( $found ){
        $remoteport = $matches[0];
        echo "[+] Found WSL instance at $remoteport"
    } else{
        echo "[!] IP address of WSL 2 cannot be found. Check the interface name in the remoteport variable.";
        break
    }
    #The ports you want to forward separated by comma
    $ports=@($param1);

    $addr='0.0.0.0';
    $ports_a = $ports -join ",";

    # Adding inbound and outbound exception rules
    iex "[void](New-NetFireWallRule -DisplayName 'WSL Port Forward' -Direction Outbound -LocalPort $ports_a -Action Allow -Protocol TCP)";
    iex "[void](New-NetFireWallRule -DisplayName 'WSL Port Forward' -Direction Inbound -LocalPort $ports_a -Action Allow -Protocol TCP)";

    for( $i = 0; $i -lt $ports.length; $i++ ){
        $port = $ports[$i];
        iex "[void](netsh interface portproxy delete v4tov4 listenport=$port listenaddress=$addr)";
        iex "netsh interface portproxy add v4tov4 listenport=$port listenaddress=$addr connectport=$port connectaddress=$remoteport";
    }

    echo "[+] Ports $param1 have been forwarded to WSL instance at $remoteport"
}

function wsl-delete-port-forward {
    if (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")){
        echo "This function needs to be run as Administrator"
        break
    }
    iex "Remove-NetFireWallRule -DisplayName 'WSL Port Forward' ";
    iex "netsh interface portproxy reset" ;
    echo "[+] Forwarded ports have been deleted"
}

function wsl-list-port-forward {
    iex "netsh interface portproxy show v4tov4";
}