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There are more ports than 5060 that need to be opened.

Sudo iptables -A INPUT -p udp -s -m multiport -dports 9000:10999 -j ACCEPT #3CX Media Server (RTP) – WAN audio/video/t38 streams Sudo iptables -A INPUT -p UDP -s -dport 5090 -j ACCEPT

Sudo iptables -A INPUT -p tcp -s -dport 5090 -j ACCEPT Sudo iptables -A INPUT -p udp -m iprange -src-range -dport 5060 -j ACCEPT Sudo iptables -A INPUT -p tcp -s -dport 5001 -j ACCEPT Sudo iptables -A INPUT -p tcp -s -dport 22 -j ACCEPT Sudo iptables -A INPUT -m state -state RELATED,ESTABLISHED -j ACCEPT Sudo iptables -A INPUT -m state -state INVALID -j REJECT Am I on the right track here using the following rules, what changes should I make?

When I run the firewall check, I get a full cone test failed. Using Debian IPTABLES to configure my firewall.