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今天服务器挂了n次。。,看iptables被更改.请版主等高手们帮忙
原帖由 "platinum" 发表:
1、贴出 iptables-save 的内容,要全部,帮你看看有什么问题
2、给 icmp 设置一个允许阀值,不要随便允许
3、有可能不是死机,而是 CPU 过载,当你再发现死机的时候,拔掉网线看能否恢复正常
给icmp设定值要怎么设定?
[root@localhost root]# iptables-save
# Generated by iptables-save v1.2.7a on Mon Aug 15 17:02:45 2005
*nat
REROUTING ACCEPT [79169909]
OSTROUTING ACCEPT [5273]
:OUTPUT ACCEPT [5273]
-A PREROUTING -s 192.168.0.0/255.255.255.0 -p udp -m udp --dport 443 -j DROP
-A PREROUTING -s 192.168.0.0/255.255.255.0 -p tcp -m tcp --dport 443 -j DROP
-A PREROUTING -s 192.168.0.0/255.255.255.0 -p udp -m udp --dport 443 -j DROP
-A PREROUTING -s 192.168.0.0/255.255.255.0 -p tcp -m tcp --dport 443 -j DROP
-A POSTROUTING -s 192.168.0.0/255.255.255.0 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.0.0/255.255.255.0 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.0.0/255.255.255.0 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.0.0/255.255.255.0 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.0.0/255.255.255.0 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.0.0/255.255.255.0 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.0.0/255.255.255.0 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.0.20 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.0.20 -o ppp0 -j MASQUERADE
COMMIT
# Completed on Mon Aug 15 17:02:45 2005
# Generated by iptables-save v1.2.7a on Mon Aug 15 17:02:45 2005
*filter
:INPUT DROP [3907]
:FORWARD ACCEPT [12602429]
:OUTPUT ACCEPT [79787]
:RH-Lokkit-0-50-INPUT - [0]
-A INPUT -s 192.168.0.50 -j ACCEPT
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i eth1 -p tcp -m multiport --dports 135,136,netbios-ns,netbios-dgm,netbios-ssn,microsoft-ds,http,ftp,domain,pop3,smtp -j ACCEPT
-A INPUT -i eth1 -p udp -m multiport --dports 135,136,netbios-ns,netbios-dgm,netbios-ssn,microsoft-ds,ftp,domain -j ACCEPT
-A INPUT -p tcp -m tcp --dport 1723 -j ACCEPT
-A INPUT -p 47 -j ACCEPT
-A INPUT -i ppp0 -p tcp -m multiport --dports pop3,http,smtp -j ACCEPT
-A FORWARD -s 192.168.0.50 -j ACCEPT
-A FORWARD -d 218.18.95.220 -j DROP
-A FORWARD -d 219.133.38.230 -j DROP
-A FORWARD -d 219.133.38.5 -j DROP
-A FORWARD -d 219.133.49.5 -j DROP
-A FORWARD -d 218.17.209.42 -j DROP
-A FORWARD -d 61.144.238.149 -j DROP
-A FORWARD -d 61.144.238.145 -j DROP
-A FORWARD -d 61.144.238.146 -j DROP
-A FORWARD -d 61.144.238.156 -j DROP
-A FORWARD -d 61.144.238.150 -j DROP
-A FORWARD -d 202.104.129.251 -j DROP
-A FORWARD -d 202.104.129.254 -j DROP
-A FORWARD -d 202.104.129.252 -j DROP
-A FORWARD -d 202.104.129.253 -j DROP
-A FORWARD -d 61.141.194.203 -j DROP
-A FORWARD -d 202.96.170.166 -j DROP
-A FORWARD -d 218.18.95.221 -j DROP
-A FORWARD -d 219.133.45.15 -j DROP
-A FORWARD -d 61.141.194.200 -j DROP
-A FORWARD -d 61.141.194.224 -j DROP
-A FORWARD -d 202.96.170.164 -j DROP
-A FORWARD -d 202.96.170.163 -j DROP
-A FORWARD -d 219.133.40.216 -j DROP
-A FORWARD -d 218.18.95.209 -j DROP
-A FORWARD -d 61.141.194.227 -j DROP
-A FORWARD -d 218.18.95.171 -j DROP
-A FORWARD -d 218.18.95.221 -j DROP
-A FORWARD -d 219.133.38.31 -j DROP
-A FORWARD -d 218.18.95.165 -j DROP
-A FORWARD -d 202.96.170.188 -j DROP
-A FORWARD -d 202.104.129.246 -j DROP
-A FORWARD -d 61.144.238.137 -j DROP
-A FORWARD -d 202.96.170.175 -j DROP
-A FORWARD -d 202.103.190.61 -j DROP
-A FORWARD -d 202.103.149.40 -j DROP
-A FORWARD -d 218.18.95.140 -j DROP
-A FORWARD -d 218.18.95.153 -j DROP
-A FORWARD -d 61.135.131.240 -j DROP
-A FORWARD -d 216.239.33.99 -j DROP
-A FORWARD -d 218.17.209.23 -j DROP
-A FORWARD -d 202.104.129.251 -j DROP
-A FORWARD -d 219.133.49.74 -j DROP
-A FORWARD -d 219.133.49.8 -j DROP
-A FORWARD -d 219.133.49.7 -j DROP
-A FORWARD -d 202.96.170.164 -j DROP
-A FORWARD -d 202.96.170.165 -j DROP
-A FORWARD -d 202.96.170.175 -j DROP
-A FORWARD -d 202.96.170.188 -j DROP
-A FORWARD -d 61.135.131.240 -j DROP
-A FORWARD -d 61.141.194.203 -j DROP
-A FORWARD -d 61.141.194.231 -j DROP
-A FORWARD -d 61.141.194.224 -j DROP
-A FORWARD -d 218.18.95.165 -j DROP
-A FORWARD -d 219.133.40.15 -j DROP
-A FORWARD -d 61.144.238.137 -j DROP
-A FORWARD -d 61.144.238.145 -j DROP
-A FORWARD -d 61.144.238.146 -j DROP
-A FORWARD -d 61.144.238.150 -j DROP
-A FORWARD -d 61.144.238.151 -j DROP
-A FORWARD -d 202.104.129.254 -j DROP
-A FORWARD -d 202.104.129.252 -j DROP
-A FORWARD -d 202.104.129.253 -j DROP
-A FORWARD -d 202.104.129.251 -j DROP
-A FORWARD -d 202.104.129.242 -j DROP
-A FORWARD -d 202.104.129.246 -j DROP
-A FORWARD -d 202.103.190.61 -j DROP
-A FORWARD -d 218.18.95.165 -j DROP
-A FORWARD -d 218.18.95.153 -j DROP
-A FORWARD -d 218.17.217.103 -j DROP
-A FORWARD -d 218.17.209.42 -j DROP
-A OUTPUT -s 192.168.0.50 -j ACCEPT
COMMIT
# Completed on Mon Aug 15 17:02:45 2005
[root@localhost root]# |
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