Displaying 1 result from an estimated 1 matches for "7d9e97e7".
2008 Jul 10
3
Iptables not blocking UDP port 53
I'm attempting to block access to port 53 from internet hosts for an
internal server. This device is behind a gateway router so all
traffic appears to come from source ip 10.100.1.1. Here are my
(non-working) iptables rules:
-A RH-Firewall-1-INPUT -s 10.100.1.1 -m tcp -p tcp --dport 53 -j REJECT
-A RH-Firewall-1-INPUT -s 10.100.1.1 -m udp -p udp --dport 53 -j REJECT
Further down the