Martin Chang的部落格

iptables (etc/sysconfig)

:PREROUTING ACCEPT [1:78]

:POSTROUTING ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A POSTROUTING -s 192.168.2.0/24 -o eth1 -j MASQUERADE 

-A POSTROUTING -s 192.168.2.0/24 -o eth0 -j MASQUERADE 

 # NIC 1 route 去NIC 0

COMMIT

# Completed on Tue Oct 25 04:52:48 2011

# Generated by iptables-save v1.4.7 on Tue Oct 25 04:52:48 2011

*filter

:INPUT ACCEPT [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [3:220]

-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 

-A INPUT -p icmp -j ACCEPT 

-A INPUT -i lo -j ACCEPT 

-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT 

-A INPUT -p udp -m state --state NEW -m udp --dport 53 -j ACCEPT

# Accept DNS client request

-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT

# Accept HTTP request

-A INPUT -j REJECT 

-A FORWARD -j ACCEPT 

COMMIT