WSL Ports Forwarding

WSL Ubuntu

Mapping localhost ports to WSL prots script:

$ports = @(4000,10000, 3000, 5000);

$wslAddress = bash.exe -c "ip a show 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";

Reference:

https://jwstanly.com/blog/article/Port+Forwarding+WSL+2+to+Your+LAN/

Written on September 25, 2023