Linux telnet查看端口是否接通

##使用telnet查看 
[root@iZbp1936hi1lzkm0kl6s69Z vhost]# telnet 120.27.160.131 8084
##成功提示
Trying 120.27.160.131...
Connected to 120.27.160.131.
Escape character is '^]'.
Connection closed by foreign host.
[root@iZbp1936hi1lzkm0kl6s69Z vhost]# telnet 120.27.160.131 8086
##失败提示
Trying 120.27.160.131...
telnet: connect to address 120.27.160.131: Connection refused
[root@iZbp1936hi1lzkm0kl6s69Z vhost]#

telnet 加ip 加端口号