[root@dell:/etc/iptables]# cat iptables.rules 
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT
-N sshguard
-A INPUT -i eth0 -p tcp --dport 22 -j sshguard
-A INPUT -i eth0 -p tcp --dport 80 -j ACCEPT
-A INPUT -i eth0 -p tcp --dport 113 -j REJECT
-A INPUT -i eth0 -p icmp -j ACCEPT
-A INPUT -i eth0 -p 41 -j ACCEPT
-A INPUT -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT 
COMMIT