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从抓包上看,外网机器已收到并回复了ping包,但是内网机器无法仍然显示timeout。
iptabes-save 如下:
[root@gw2 ~]# iptables-save
# Generated by iptables-save v1.2.11 on Sun Jan 5 17:19:49 2003
*nat
REROUTING ACCEPT [1568:180161]
OSTROUTING ACCEPT [28:1712]
:OUTPUT ACCEPT [27:1652]
-A PREROUTING -d 10.16.13.251 -i eth0 -p tcp -m tcp --dport 80 -j DNAT --to-destination 10.16.13.251:8080
-A PREROUTING -d 10.16.13.251 -i eth0 -p tcp -m tcp --dport 5200 -j DNAT --to-destination 192.168.2.1:5200
-A POSTROUTING -s 192.168.2.0/255.255.255.0 -o eth0 -p tcp -j SNAT --to-source 10.16.13.251
-A POSTROUTING -s 192.168.2.0/255.255.255.0 -o eth0 -p udp -j SNAT --to-source 10.16.13.251
COMMIT
# Completed on Sun Jan 5 17:19:49 2003
# Generated by iptables-save v1.2.11 on Sun Jan 5 17:19:49 2003
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [51748:2769101]
:ZXECS - [0:0]
-A INPUT -j ZXECS
-A FORWARD -p icmp -j ACCEPT
-A FORWARD -p udp -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -p tcp -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -j ACCEPT
-A ZXECS -i lo -j ACCEPT
-A ZXECS -p icmp -j ACCEPT
-A ZXECS -p tcp -m tcp --dport 22 --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A ZXECS -i eth0 -p icmp -m icmp --icmp-type any -j ACCEPT
-A ZXECS -i eth1 -p icmp -m icmp --icmp-type any -j ACCEPT
-A ZXECS -p tcp -m tcp --dport 21 --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A ZXECS -p tcp -m tcp --dport 25 --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A ZXECS -p tcp -m multiport --dports 80,8080,9090,9091,5222,5223,5200,5201,1099,9999 -m tcp --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A ZXECS -p tcp -m state --state RELATED,ESTABLISHED -j ACCEPT
-A ZXECS -p tcp -m tcp --dport 0:1023 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with icmp-port-unreachable
-A ZXECS -p tcp -m tcp --dport 2049 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with icmp-port-unreachable
-A ZXECS -p udp -m udp --dport 0:1023 -j REJECT --reject-with icmp-port-unreachable
-A ZXECS -p udp -m udp --dport 2049 -j REJECT --reject-with icmp-port-unreachable
-A ZXECS -p tcp -m tcp --dport 6000:6009 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with icmp-port-unreachable
-A ZXECS -j DROP
COMMIT
不知道怎么回事,麻烦告诉下,
ip_forward 文件内容为1.
[ 本帖最后由 hiei1321 于 2007-6-13 11:56 编辑 ] |
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