悠悠博客 (讨论区存档) — 技术永无止尽，未来事在人为

回复 #1 grace_redhat 的帖子

需要做一个端口映身。

如何做？？？详细点

你的問題描述不夠詳細, 但是直覺是Firewall 端口的問題.

IPTABELS需要做什么设置吗

我的IPTABLES配置如下：

[code]:POSTROUTING ACCEPT [3899:403515]
COMMIT
# Completed on Thu May  8 05:30:32 2008
# Generated by iptables-save v1.2.11 on Thu May  8 05:30:32 2008
*nat
:PREROUTING ACCEPT [426:41801]
:POSTROUTING ACCEPT [21:860]
:OUTPUT ACCEPT [1:60]
-A PREROUTING -i eth1 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3128
-A POSTROUTING -s 192.168.1.0/255.255.255.0 -o eth0 -j MASQUERADE
-A POSTROUTING -s 192.168.2.0/255.255.255.0 -o eth0 -j MASQUERADE
-A POSTROUTING -s 192.168.6.0/255.255.255.0 -o eth0 -j MASQUERADE
-A POSTROUTING -s 192.168.7.0/255.255.255.0 -o eth0 -j MASQUERADE
COMMIT
# Completed on Thu May  8 05:30:32 2008
# Generated by iptables-save v1.2.11 on Thu May  8 05:30:32 2008
*filter
:INPUT DROP [402:40439]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [3856:400645]
:DMZIN - [0:0]
:DMZOUT - [0:0]
:INETIN - [0:0]
:INETOUT - [0:0]
:LDROP - [0:0]
:LREJECTLTREJECT - [0:0]
:TCPACCEPT - [0:0]
:TREJECT - [0:0]
:UDPACCEPT - [0:0]
:ULDROP - [0:0]
:ULREJECT - [0:0]
:ULTREJECT - [0:0]
-A INPUT -i eth0 -j INETIN
-A INPUT -s 192.168.1.0/255.255.255.0 -j ACCEPT
-A INPUT -s 192.168.2.0/255.255.255.0 -j ACCEPT
-A INPUT -s 192.168.6.0/255.255.255.0 -j ACCEPT
-A INPUT -s 192.168.7.0/255.255.255.0 -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A FORWARD -i eth0 -o eth1 -j INETIN
-A FORWARD -i eth1 -o eth0 -j INETOUT
-A FORWARD -m ipp2p --ipp2p -j DROP
-A FORWARD -m ipp2p --kazaa --gnu --edk --dc --bit --pp --xunlei --apple --soul --winmx --ares -j DROP
-A FORWARD -s 192.168.1.0/255.255.255.0 -i ! eth0 -o ! eth0 -j ACCEPT
-A FORWARD -s 192.168.2.0/255.255.255.0 -i ! eth0 -o ! eth0 -j ACCEPT
-A FORWARD -s 192.168.6.0/255.255.255.0 -i ! eth0 -o ! eth0 -j ACCEPT
-A FORWARD -s 192.168.7.0/255.255.255.0 -i ! eth0 -o ! eth0 -j ACCEPT
-A OUTPUT -o eth0 -j INETOUT
-A INETIN -m state --state INVALID -j TREJECT
-A INETIN -p icmp -m icmp --icmp-type 5 -j TREJECT
-A INETIN -p icmp -m icmp --icmp-type 9 -j TREJECT
-A INETIN -p icmp -m icmp --icmp-type 10 -j TREJECT
-A INETIN -p icmp -m icmp --icmp-type 15 -j TREJECT
-A INETIN -p icmp -m icmp --icmp-type 16 -j TREJECT
-A INETIN -p icmp -m icmp --icmp-type 17 -j TREJECT
-A INETIN -p icmp -m icmp --icmp-type 18 -j TREJECT
-A INETIN -p icmp -m icmp --icmp-type 8 -m limit --limit 1/sec -j ACCEPT
-A INETIN -p icmp -m icmp --icmp-type 8 -j TREJECT
-A INETIN -p icmp -m icmp ! --icmp-type 8 -j ACCEPT
-A INETIN -p tcp -m tcp --dport 22 -j TCPACCEPT
-A INETIN -p tcp -m tcp --dport 21 -j TCPACCEPT
-A INETIN -p tcp -m tcp --dport 81 -j TCPACCEPT
-A INETIN -p udp -m udp --dport 68 -j UDPACCEPT
-A INETIN -p udp -m udp --dport 6112 -j UDPACCEPT
-A INETIN -p udp -m udp --dport 6119 -j UDPACCEPT
-A INETIN -p udp -m udp --dport 4000 -j UDPACCEPT
-A INETIN -m state --state ESTABLISHED -j ACCEPT
-A INETIN -p tcp -m tcp --dport 1024:65535 -m state --state RELATED -j TCPACCEPT
-A INETIN -p udp -m udp --dport 1024:65535 -m state --state RELATED -j UDPACCEPT
-A INETIN -j TREJECT
-A INETOUT -j ACCEPT
-A LDROP -p tcp -m limit --limit 2/sec -j LOG --log-prefix "TCP Dropped " --log-level 6
-A LDROP -p udp -m limit --limit 2/sec -j LOG --log-prefix "UDP Dropped " --log-level 6
-A LDROP -p icmp -m limit --limit 2/sec -j LOG --log-prefix "ICMP Dropped " --log-level 6
-A LDROP -f -m limit --limit 2/sec -j LOG --log-prefix "FRAGMENT Dropped "
-A LDROP -j DROP
-A TCPACCEPT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 20/sec -j ACCEPT
-A TCPACCEPT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 2/sec -j LOG --log-prefix "Possible SynFlood "
-A TCPACCEPT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j TREJECT
-A TCPACCEPT -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A TCPACCEPT -m limit --limit 2/sec -j LOG --log-prefix "Mismatch in TCPACCEPT "
-A TCPACCEPT -j TREJECT
-A TREJECT -p tcp -j REJECT --reject-with tcp-reset
-A TREJECT -p udp -j REJECT --reject-with icmp-port-unreachable
-A TREJECT -p icmp -j DROP
-A TREJECT -j REJECT --reject-with icmp-port-unreachable
-A UDPACCEPT -p udp -j ACCEPT
-A UDPACCEPT -m limit --limit 2/sec -j LOG --log-prefix "Mismatch on UDPACCEPT "
-A UDPACCEPT -j TREJECT
-A ULDROP -p tcp -m limit --limit 2/sec -j ULOG --ulog-prefix "LDROP_TCP"
-A ULDROP -p udp -m limit --limit 2/sec -j ULOG --ulog-prefix "LDROP_UDP"
-A ULDROP -p icmp -m limit --limit 2/sec -j ULOG --ulog-prefix "LDROP_ICMP"
-A ULDROP -f -m limit --limit 2/sec -j ULOG --ulog-prefix "LDROP_FRAG"
-A ULDROP -j DROP
-A ULREJECT -p tcp -m limit --limit 2/sec -j ULOG --ulog-prefix "LREJECT_TCP"
-A ULREJECT -p udp -m limit --limit 2/sec -j ULOG --ulog-prefix "LREJECT_UDP"
-A ULREJECT -p icmp -m limit --limit 2/sec -j ULOG --ulog-prefix "LREJECT_UDP"
-A ULREJECT -f -m limit --limit 2/sec -j ULOG --ulog-prefix "LREJECT_FRAG"
-A ULREJECT -j REJECT --reject-with icmp-port-unreachable
-A ULTREJECT -p tcp -m limit --limit 2/sec -j ULOG --ulog-prefix "LTREJECT_TCP"
-A ULTREJECT -p udp -m limit --limit 2/sec -j ULOG --ulog-prefix "LTREJECT_UDP"
-A ULTREJECT -p icmp -m limit --limit 2/sec -j ULOG --ulog-prefix "LTREJECT_ICMP"
-A ULTREJECT -f -m limit --limit 2/sec -j ULOG --ulog-prefix "LTREJECT_FRAG"
-A ULTREJECT -p tcp -j REJECT --reject-with tcp-reset
-A ULTREJECT -p udp -j REJECT --reject-with icmp-port-unreachable
-A ULTREJECT -p icmp -j DROP
-A ULTREJECT -j REJECT --reject-with icmp-port-unreachable
COMMIT
# Completed on Thu May  8 05:30:32 2008[/code]