清除/proc/net/ip_conntrack的方法
时间：2009-08-24 来源：公子月
清除/proc/net/ip_conntrack的方法(之前一直不知道这个方法，感谢贵林的blog)
/proc/net/ip_conntrack一直显示已经被封掉的连接，如果不reboot，要5天后才会清除，给监控造成很大影响。
iptstate -s -t #显示IP连接状态
http://www.netexpert.cn/thread-4453-1-127.html 下载hping:
http://www.hping.org/download.html ./configure
make
make install 安装后写一个script: #!/bin/bash echo
echo "############################"
echo "# Edit by Youngh 2003.06.24 v1.1 "
echo "# Usage : clr_conns IpAddress"
echo "# This will clear all connections from this IP_Address"
echo "# Example:/root/clr_conns 10.0.3.3 "
echo "############################"
echo if [ -z $1 ] ; then
exit
fi grep -E "^tcp .{10,25}ESTABLISHED src=$1 " /proc/net/ip_conntrack | while read line ; do
S_IP=`echo $line | awk '{print substr($5,5)}'`
S_SOCK=`echo $line | awk '{print substr($7,7)}'`
D_IP=`echo $line | awk '{print substr($6,5)}'`
D_SOCK=`echo $line | awk '{print substr($8,7)}'`
echo "$S_IP:$S_SOCK $D_IP:$D_SOCK" hping2 $D_IP -R -s $S_SOCK -p $D_SOCK -a $S_IP -k -c 1 >/dev/null 2>/dev/null & done 保存为clr_conns.sh 用: sh clr_conns.sh x.x.x.x 就可以清除显示的连接.
iptstate -s -t #显示IP连接状态
http://www.netexpert.cn/thread-4453-1-127.html 下载hping:
http://www.hping.org/download.html ./configure
make
make install 安装后写一个script: #!/bin/bash echo
echo "############################"
echo "# Edit by Youngh 2003.06.24 v1.1 "
echo "# Usage : clr_conns IpAddress"
echo "# This will clear all connections from this IP_Address"
echo "# Example:/root/clr_conns 10.0.3.3 "
echo "############################"
echo if [ -z $1 ] ; then
exit
fi grep -E "^tcp .{10,25}ESTABLISHED src=$1 " /proc/net/ip_conntrack | while read line ; do
S_IP=`echo $line | awk '{print substr($5,5)}'`
S_SOCK=`echo $line | awk '{print substr($7,7)}'`
D_IP=`echo $line | awk '{print substr($6,5)}'`
D_SOCK=`echo $line | awk '{print substr($8,7)}'`
echo "$S_IP:$S_SOCK $D_IP:$D_SOCK" hping2 $D_IP -R -s $S_SOCK -p $D_SOCK -a $S_IP -k -c 1 >/dev/null 2>/dev/null & done 保存为clr_conns.sh 用: sh clr_conns.sh x.x.x.x 就可以清除显示的连接.
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