linux中telnet后退出连接窗口 [root@a cron]# telnet www.baidu.com 80Trying 115.239.211.112...Connected to www.baidu.com. #显示connected,表示连接成功!Escape character is '^]'.^C^C^C^Z^Z^Z #按ctrl+c,ctrl+z,ctrl+D都不行,Connection closed by foreign host.[root@a cron]# te
1.tcpdump. nginx开启后会占用80端口,此时运行命令:tcpdump tcp port 80 结果例如以下: [syswj@host ~]$ sudo tcpdump tcp port 80 [sudo] password for syswj: tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on Auto_eth0, link-type EN10MB (Eth