wsl2 port forwarding script

wsl2-portforward.ps1

$remoteAddr = bash.exe -c "ifconfig eth0 | grep 'inet '"
$found = $remoteAddr -match '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';

if( $found ){
  $remoteAddr = $matches[0];
  echo $remoteAddr;
} else{
  echo "The Script Exited, the ip address of WSL 2 cannot be found";
  exit;
}

#[Ports]

#All the ports you want to forward separated by coma
$ports=@(80, 443, 3000, 3001, 3306, 5432, 5500, 6379, '8000-8010','8080-8100', 8443, 8981, 9229);


#[Static ip]
#You can change the addr to your ip config to listen to a specific address
$addr='0.0.0.0';
$ports_a = $ports -join ",";


$firewallRuleName = "WSL 2 Firewall Unlock";

#Remove Firewall Exception Rules
iex "Remove-NetFireWallRule -DisplayName '$firewallRuleName' ";

#adding Exception Rules for inbound and outbound Rules
iex "New-NetFireWallRule -DisplayName '$firewallRuleName' -Direction Outbound -LocalPort $ports_a -Action Allow -Protocol TCP";
iex "New-NetFireWallRule -DisplayName '$firewallRuleName' -Direction Inbound -LocalPort $ports_a -Action Allow -Protocol TCP";


#delete all previous v4tov4 rules
$regex = [regex] '(\d{2,5}$)'
$prevRoutePorts = iex "netsh interface portproxy show v4tov4" | Select-String '(\d{2,5}$)' -AllMatches | Foreach {$_.Matches} | Foreach{$_.Value};
Foreach($port in $prevRoutePorts) {
  iex "netsh interface portproxy delete v4tov4 listenport=$port listenaddress=$addr";
  echo "deleted previously v4tov4 rule on port $port";
}


#add port forward rules
function addPortForward($listenPort) {
  iex "netsh interface portproxy add v4tov4 listenport=$listenPort connectport=$listenPort connectaddress=$remoteAddr";
  echo "added port $listenPort to v4tov4 portproxy";
}

for( $i = 0; $i -lt $ports.length; $i++ ){
  $port = $ports[$i];
  if ($port.GetType() -Eq [int]) {
    addPortForward($port);
  } elseif ($port.GetType() -Eq [string]) {
    $dashIndex = $port.IndexOf('-');
    if ($dashIndex -ge 0) {
      echo "`n# found range $port";
      $portRange = $port.Split("{-}");
      $portFrom = [int]$portRange[0];
      $portTo = [int]$portRange[$portRange.length-1];
      for( $port = $portFrom; $port -le $portTo; $port++ ){
        addPortForward($port);
      }
    }
  }
}


#run wsl init script
echo "`n# running wsl init bash script:`n";
bash.exe -c "sudo /opt/wsl-init.sh"
# #!/bin/sh -e
# sysctl -w net.ipv4.conf.all.route_localnet=1
# iptables -t nat -I PREROUTING -p tcp -j DNAT --to-destination 127.0.0.1
# sysctl -w fs.inotify.max_user_watches=524288