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多谢楼上两位的帮忙啊,非常感谢
:INPUT DROP [664356:43910875]
:FORWARD ACCEPT [54245538:31896311689]
:OUTPUT ACCEPT [17384:3436870]
-A INPUT -i eth2 -p tcp -m multiport --dports 110,80,22,25 -j ACCEPT
-A INPUT -i eth0 -j ACCEPT
-A INPUT -i lo -j ACCEPT
COMMIT
# Completed on Wed Dec 21 17:40:04 2005
# Generated by iptables-save v1.2.8 on Wed Dec 21 17:40:04 2005
*nat
REROUTING ACCEPT [2121648:306767806]
OSTROUTING ACCEPT [263:17679]
:OUTPUT ACCEPT [213:13787]
-A PREROUTING -d 公网IP -p tcp -m tcp --dport 110 -j DNAT --to-destination mail IP
-A PREROUTING -d 公网IP -p tcp -m tcp --dport 25 -j DNAT --to-destination mail IP
-A PREROUTING -d 公网IP -p tcp -m tcp --dport 80 -j DNAT --to-destination mail IP
-A POSTROUTING -s 内网网段 -o eth2 -j SNAT --to-source 公网IP
-A POSTROUTING -d mail IP -p tcp -m tcp --dport 110 -j SNAT --to-source 内网网关
-A POSTROUTING -d mail IP -p tcp -m tcp --dport 25 -j SNAT --to-source 内网网关
-A POSTROUTING -d mail IP -p tcp -m tcp --dport 80 -j SNAT --to-source 内网网关 |
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