Hi, I am evaluating kerio mailserver on centos 4.4, everything works when iptables is of but when it's on i can't seem to connect with the administration control. it makes use of port 443377 (tcp and udp),so i need to be able to connect to my mailserver on 192.168.0.250 trough this port. I tried the following but no luck iptables -A INPUT -s 192.168.0.117 (and also tried 192.168.0.0/24) -d 192.168.0.250 -p udp ( and tcp ) --dport 44337 -j ACCEPT But the above doesn't seem to work And i probably have tod add mapi and smtp en pop 3 ports to be accecpted thanks in advance thanks in advance