[[email protected] ~]# yum list |grep telnet telnet.x86_64 1:0.17-48.el6 @base telnet-server.x86_64 1:0.17-48.el6 base [[email protected] ~]# which telnet /usr/bin/telnet
[[email protected] ~]# telnet 123.56.78.103 3306 Trying 123.56.78.103... Connected to 123.56.78.103. Escape character is ‘^]‘. N 5.5.40-logxxxxxpassword#证明3306端口开了
[[email protected] ~]# telnet 123.56.78.103 22 Trying 123.56.78.103... Connected to 123.56.78.103. Escape character is ‘^]‘. SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2 #证明22端口开发
[[email protected] ~]# telnet 123.56.78.103 23 Trying 123.56.78.103... telnet: connect to address 123.56.78.103: Connection refused #证明23端口没开
时间： 2024-11-10 07:52:58