Modify the default port through ssh

Modify the default port through ssh-general Linux technology-Linux technology and application information. For more information, see the following. [I = s] This post was last edited by helloluxinyi

How to change. I read a lot online.
Before modification, securecrt can be used for remote linux. Use the default port 22, but change it to 3000.
Vi/etc/ssh/sshd_config
# Port 22 is changed to # port 3000
Vi/etc/ssh/ssh_config
In # port 22 to # port 3000
Then service sshd restart
Neither securecrt nor securecrt can be connected to my linux.
In the end, how can I modify the configuration file on the Internet. Help. Hero.