在运维过程中，常常会telnet某个ip端口，如果 能telnet通，怎么退出呢 ？ 

1、telnet 63.172.25.18 6463 回车


   Trying 63.172.25.18...
 
   Connected to 63.172.25.18 (63.172.25.18).
 
   Escape character is '^]'.

 

2、ctrl + ] 回车 

telnet>

3、? 回车

close close current connection
 
   logout forcibly logout remote user and close the connection
 
   display display operating parameters
 
   mode try to enter line or character mode ('mode ?' for more)
 
   open connect to a site
 
   quit exit telnet
 
   send transmit special characters ('send ?' for more)
 
   set set operating parameters ('set ?' for more)
 
   unset unset operating parameters ('unset ?' for more)
 
   status print status information
 
   toggle toggle operating parameters ('toggle ?' for more)
 
   slc change state of special charaters ('slc ?' for more)
 
   auth turn on (off) authentication ('auth ?' for more)
 
   encrypt turn on (off) encryption ('encrypt ?' for more)
 
   forward turn on (off) credential forwarding ('forward ?' for more)
 
   z suspend telnet
 
   ! invoke a subshell
 
   environ change environment variables ('environ ?' for more)
 
   ? print help information

 

4、quit 回车