由 linker_yxj 在 10-15-2003 09:39 发表:
为什么网速慢，一会后就不能上网（IPTABLES）
网络环境是需要拨号的FTTX+LAN，用RH9＋IPTABLE共享上网，IPTABLE的脚本如下：
＃！/bin/sh
modprobe ip_nat_ftp
modprobe ip_conntrack_ftp
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
就这样我用了一个月，今天装RH9的电脑都上不了网，除非重启并不执行上面的脚本。
在线等好心人回复
由 netsafe 在 10-15-2003 16:35 发表:
估计是中病毒了
用tcpdump看看。是否有可疑的网络流量。检查/proc/net/ip_conn???表是否添满。也许是冲击波病毒或者变种。
由 linker_yxj 在 10-15-2003 17:22 发表:
这是cat /proc/net/ip_conntrack的内容，帮我看看.
tcp 6 431971 ESTABLISHED src=192.168.100.8 dst=192.168.100.2 sport=1034 dport=139 src=192.168.100.2 dst=192.168.100.8 sport=139 dport=1034 [ASSURED] use=1
tcp 6 109 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32855 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32855 [ASSURED] use=1
tcp 6 431983 ESTABLISHED src=192.168.100.5 dst=211.136.86.9 sport=1925 dport=3004 src=211.136.86.9 dst=219.141.1.113 sport=3004 dport=1925 [ASSURED] use=1
tcp 6 13 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32836 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32836 [ASSURED] use=1
tcp 6 33 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32840 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32840 [ASSURED] use=1
tcp 6 53 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32844 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32844 [ASSURED] use=1
tcp 6 74 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32848 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32848 [ASSURED] use=1
tcp 6 94 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32852 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32852 [ASSURED] use=1
tcp 6 114 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32856 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32856 [ASSURED] use=1
tcp 6 431991 ESTABLISHED src=192.168.100.5 dst=211.136.86.9 sport=1924 dport=2002 src=211.136.86.9 dst=219.141.1.113 sport=2002 dport=1924 [ASSURED] use=1
tcp 6 18 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32837 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32837 [ASSURED] use=1
udp 17 27 src=192.168.100.1 dst=192.168.100.255 sport=137 dport=137 [UNREPLIED] src=192.168.100.255 dst=192.168.100.1 sport=137 dport=137 use=1
tcp 6 38 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32841 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32841 [ASSURED] use=1
tcp 6 58 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32845 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32845 [ASSURED] use=1
udp 17 169 src=192.168.100.8 dst=202.104.129.252 sport=4000 dport=8000 src=202.104.129.252 dst=219.141.1.113 sport=8000 dport=4000 [ASSURED] use=1
udp 17 173 src=192.168.100.11 dst=202.104.129.254 sport=4000 dport=8000 src=202.104.129.254 dst=219.141.1.113 sport=8000 dport=4000 [ASSURED] use=1
tcp 6 79 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32849 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32849 [ASSURED] use=1
tcp 6 99 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32853 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32853 [ASSURED] use=1
tcp 6 431999 ESTABLISHED src=192.168.100.5 dst=211.136.86.9 sport=1919 dport=3004 src=211.136.86.9 dst=219.141.1.113 sport=3004 dport=1919 [ASSURED] use=1
tcp 6 119 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32857 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32857 [ASSURED] use=1
tcp 6 432000 ESTABLISHED src=192.168.100.127 dst=192.168.100.2 sport=4126 dport=23 src=192.168.100.2 dst=192.168.100.127 sport=23 dport=4126 [ASSURED] use=1
tcp 6 23 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32838 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32838 [ASSURED] use=1
tcp 6 43 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32842 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32842 [ASSURED] use=1
tcp 6 64 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32846 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32846 [ASSURED] use=1
tcp 6 84 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32850 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32850 [ASSURED] use=1
tcp 6 104 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32854 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32854 [ASSURED] use=1
tcp 6 431965 ESTABLISHED src=192.168.100.5 dst=211.136.86.9 sport=1926 dport=2002 src=211.136.86.9 dst=219.141.1.113 sport=2002 dport=1926 [ASSURED] use=1
tcp 6 8 TIME_WAIT src=127.0.0.1 dst=127.0.0.1 sport=32835 dport=631 src=127.0.0.1 dst=127.0.0.1 sport=631 dport=32835 [ASSURED] use=1
tcp 6 431974 ESTABLISHED src=192.168.100.8 dst=61.236.194.108 sport=1255 dport=80 src=61.236.194.108 d