Bridge external Ports on Windows into WSL2 - Bridge-WslPorts.ps1

Bridge-WslPorts.ps1

## https://jwstanly.com/blog/article/Port+Forwarding+WSL+2+to+Your+LAN/
## Execute with: powershell.exe -File "C:\Users\wunsch\Bridge-WslPorts.ps1"

Start-Transcript -Path "C:\Users\wunsch\Bridge-WslPorts.log" -Append

$ports = @(80, 443, 1234, 3000, 4502, 4503, 4326, 4327, 5000, 10000, 25565, 25575);

$wslAddress = bash.exe -c "ifconfig eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}'"

if ($wslAddress -match '^(\d{1,3}\.){3}\d{1,3}$') {
  Write-Host "WSL IP address: $wslAddress" -ForegroundColor Green
  Write-Host "Ports: $ports" -ForegroundColor Green
}
else {
  Write-Host "Error: Could not find WSL IP address." -ForegroundColor Red
  exit
}

$listenAddress = '0.0.0.0';

foreach ($port in $ports) {
  Invoke-Expression "netsh interface portproxy delete v4tov4 listenport=$port listenaddress=$listenAddress";
  Invoke-Expression "netsh interface portproxy add v4tov4 listenport=$port listenaddress=$listenAddress connectport=$port connectaddress=$wslAddress";
}

$fireWallDisplayName = 'WSL Port Forwarding';
$portsStr = $ports -join ",";

Invoke-Expression "Remove-NetFireWallRule -DisplayName '$fireWallDisplayName'";
Invoke-Expression "New-NetFireWallRule -DisplayName '$fireWallDisplayName' -Direction Outbound -LocalPort $portsStr -Action Allow -Protocol TCP";
Invoke-Expression "New-NetFireWallRule -DisplayName '$fireWallDisplayName' -Direction Inbound -LocalPort $portsStr -Action Allow -Protocol TCP";