用iptables设置好防火墙后!内网游览网页很慢!:(

[spubull]

刚用ubunut做了个防火墙
外网eth2-192.168.1.102
内网eth0-192.168.0.1

以下是iptable-save的结果

root@Fire:~# iptables-save
# Generated by iptables-save v1.3.6 on Tue Dec 18 08:07:23 2007
*nat
REROUTING ACCEPT [13467:847486]
OSTROUTING ACCEPT [192:20586]
:OUTPUT ACCEPT [578:49412]
-A POSTROUTING -o eth2 -j MASQUERADE
COMMIT
# Completed on Tue Dec 18 08:07:23 2007
# Generated by iptables-save v1.3.6 on Tue Dec 18 08:07:23 2007
*filter
:INPUT DROP [241:24642]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [741:101896]
:syn-flood - [0:0]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p tcp -m multiport --dports 110,80,8080,25,22,21,445,1863,5222 -j ACCEPT
-A INPUT -s 192.168.0.0/255.255.255.0 -p tcp -m tcp --dport 139 -j ACCEPT
-A INPUT -i eth2 -p udp -m multiport --dports 53 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 1723 -j ACCEPT
-A INPUT -p gre -j ACCEPT
-A INPUT -s 192.168.0.0/255.255.255.0 -p tcp -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i eth2 -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m connlimit --connlimit-above 2000 --connlimit-mask 32 -j DROP
-A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -j syn-flood
-A FORWARD -m string --string "qq.com" --algo bm --to 65535 -j DROP
-A FORWARD -p tcp -m tcp --dport 53 -m string --string "tencent" --algo bm --to 65535 -j DROP
-A FORWARD -p tcp -m tcp --dport 53 -m string --string "TENCENT" --algo bm --to 65535 -j DROP
-A FORWARD -p udp -m udp --dport 53 -m string --string "TENCENT" --algo bm --to 65535 -j DROP
-A FORWARD -m string --string "tencent" --algo bm --to 65535 -j DROP
-A FORWARD -p tcp -m multiport --dports 80,110,8080,21,22,25,1723 -j ACCEPT
-A FORWARD -p tcp -m tcp --dport 80 -j ULOG --ulog-prefix "Http connection attempt: "
-A FORWARD -p udp -m udp --dport 53 -j ACCEPT
-A FORWARD -s 192.168.0.0/255.255.255.0 -p gre -j ACCEPT
-A FORWARD -s 192.168.0.0/255.255.255.0 -p icmp -j ACCEPT
-A FORWARD -m string --string "xxx.com" --algo bm --to 65535 -j DROP
-A FORWARD -m string --string ".torrent" --algo bm --to 65535 -j DROP
-A FORWARD -m string --string "bt" --algo bm --to 65535 -j DROP
-A FORWARD -m string --string "fund" --algo bm --to 65535 -j DROP
-A FORWARD -m string --string "finance" --algo bm --to 65535 -j DROP
-A FORWARD -m string --string "stock" --algo bm --to 65535 -j DROP
-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 192.168.0.0/255.255.255.0 -m ipp2p --kazaa --gnu --edk --dc --bit --pp --xunlei --apple --soul --winmx --ares -j DROP
-A FORWARD -s 192.168.0.0/255.255.255.0 -p tcp -m ipp2p --ares -j DROP
-A FORWARD -s 192.168.0.0/255.255.255.0 -p udp -m ipp2p --kazaa -j DROP
-A syn-flood -p tcp -m limit --limit 3/sec --limit-burst 6 -j RETURN
-A syn-flood -j REJECT --reject-with icmp-port-unreachable
COMMIT

系统里面没有装L7的补钉,直接安装了IPP2P

现在内网的机器可以开到网页,但是极度缓慢!好象打开www.pconline.com.cn的时候只能读到部分.图片不能显示
开多几个之后就完全不能开启了
内网ping www.baidu.com能解释
另外用OUTLOOK不能收HOTMAIL的邮件.每次登陆都提示用户密码错误

麻烦各位大大帮忙看看我是那个地方设置出错了,谢谢!小的是新接触IPTABLES的东西!很多都不了解.

[hubert_star]

你确信你的防火墙策略写的没有问题？
你就不能清空一条一条调试吗？