#193.2.67.69 is merlin sudo iptables -I INPUT -p tcp -s 193.2.67.69 --dport 8765 -j ACCEPT #193.2.68.227 is vangogh sudo iptables -I INPUT -p tcp -s 193.2.68.227 --dport 8765 -j ACCEPT sudo iptables -A INPUT -p tcp -s 0.0.0.0/0 --dport 8765 -j DROP