可以统计nat时tcp和udp的连接的脚本

#!/bin/bash
case "$1" in
-t)
cat -n /proc/net/ip_conntrack |grep tcp |awk '{print $2"\t"$5"\t"$6"\t"$7"\t"$8"\t"$9"\t"$11}'|more
echo
sun= cat /proc/net/ip_conntrack|grep -c src
echo
echo
echo
;;

-u)
cat -n /proc/net/ip_conntrack |grep udp |awk '{print $2"\t"$5"\t"$6"\t"$7"\t"$8"\t"$10}'|more
echo
sun= cat /proc/net/ip_conntrack|grep -c src
echo
echo
echo
;;

-a)
cat -n /proc/net/ip_conntrack |grep tcp |awk '{print $2"\t"$5"\t"$6"\t"$7"\t"$8"\t"$9"\t"$11}'|more
cat -n /proc/net/ip_conntrack |grep udp |awk '{print $2"\t"$5"\t"$6"\t"$7"\t"$8"\t"$10}'|more
echo
sun= cat /proc/net/ip_conntrack|grep -c src
echo
echo
echo
;;

*)
echo "Usage {-t Tcp | -u Udp }"
echo
echo "Write By [email protected]"
echo
exit 1
esac
exit 0

http://bbs.chinaunix.net/viewthread.php?tid=745187&extra=page%3D1