WSL Port Forwarding by John Wright - https://pastebin.com/HufmMFun

portforward.ps1

$ports = @(80, 443, 10000, 3000, 5000);

$wslAddress = bash.exe -c "ip addr 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 $ports) {
  netsh interface portproxy delete v4tov4 listenport=$port listenaddress=$listenAddress;
  netsh interface portproxy add v4tov4 listenport=$port listenaddress=$listenAddress connectport=$port connectaddress=$wslAddress;
}

$fireWallDisplayName = 'WSL Port Forwarding';

Remove-NetFireWallRule -DisplayName $fireWallDisplayName;
New-NetFireWallRule -DisplayName $fireWallDisplayName -Direction Outbound -LocalPort $ports -Action Allow -Protocol TCP;
New-NetFireWallRule -DisplayName $fireWallDisplayName -Direction Inbound -LocalPort $ports -Action Allow -Protocol TCP;