Hi guys. Is there any proper way to block or drop UDP traffic going in and out of this router? I tried to apply iptables rules, firewall rules as well but no luck. Any device that tries to send UDP package (such as wireguard) still able to pass and receive the packages.
The reason behind this is because I want to force some applications (android) to use their TCP insted of UDP. I realize that for some application that only use UDP will not work but it doesn’t matter for now.