#!/bin/bash
# SPECIFY THE VPN-VM IP
IP=""

# DO NOT CHANGE BELOW THIS LINE
if [[ ! $IP =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
  echo "Invalid IPv4 address, please specify it in this script."
  exit 1
fi

firewall-cmd --add-forward-port=port=500:proto=udp:toport=500:toaddr="$IP"
firewall-cmd --add-forward-port=port=4500:proto=udp:toport=4500:toaddr="$IP"
firewall-cmd --add-forward-port=proto=50:toaddr="$IP"
firewall-cmd --add-forward-port=proto=51:toaddr="$IP"
firewall-cmd --add-masquerade