centos iptables

vi /etc/sysconfig/iptables

*filter
:INPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 88 -j ACCEPT
COMMIT

*nat
:PREROUTING ACCEPT [90:4834]
:POSTROUTING ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A POSTROUTING -s 10.10.10.0/24 -j SNAT --to-source 162.211.126.17
COMMIT