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                **一、查看哪些IP連接本機** netstat -an **二、查看TCP連接數** **1)統計80端口連接數** ~~~ netstat -nat|grep -i "80"|wc -l ~~~ **2)統計httpd協議連接數** ~~~ ps -ef|grep httpd|wc -l ~~~ **3)統計已連接上的,狀態為“established** ~~~ netstat -na|grep ESTABLISHED|wc -l ~~~ **4)查出哪個IP地址連接最多,將其封了.** ~~~ netstat -na|grep ESTABLISHED|awk {print $5}|awk -F: {print $1}|sort|uniq -c|sort -r +0n netstat -na|grep SYN|awk {print $5}|awk -F: {print $1}|sort|uniq -c|sort -r +0n ~~~ > 原文鏈接:[https://blog.csdn.net/he\_jian1/article/details/40787269](https://blog.csdn.net/he_jian1/article/details/40787269) **5)centOS服務器 netstat命令 查看TCP連接數信息** ~~~ netstat -an |grep 'ESTABLISHED' |grep 'tcp' |wc -l ~~~ > 原文鏈接:[https://blog.csdn.net/slovyz/article/details/47019221](https://blog.csdn.net/slovyz/article/details/47019221)
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