If you really want to see the (hidden) rules GUI/CLI creates, look into iptables, since that's used under the hood
sudo iptables -L -n -v sudo iptables -L -n -v -t nat
If you really want to see the (hidden) rules GUI/CLI creates, look into iptables, since that's used under the hood
sudo iptables -L -n -v sudo iptables -L -n -v -t nat