linux远程端口查看
telnet常被用来检测是个远端端口是否通畅。
[root@oldboy ~]# telnet baidu.com 80 Trying 123.125.114.144... Connected to baidu.com (123.125.114.144). #==>出现Connected表示连通了,说明百度的80端口开放的 Escape character is '^]'. #==>ctrl+]退出此地。 ^] telnet> quit Connection closed.
如果写脚本通过telnet检查端口可以用下面的方法:
[root@oldboy ~]# echo -e "\n"|telnet baidu.com 80|grep Connected Connection closed by foreign host. Connected to baidu.com (123.125.114.144).