Modify remote login port in Linux

First modify the port configuration file

sudo vi /etc/ssh/sshd_config

turn upPort 22

You can directly change 22 to the port you want

You can also add it below Port ${你想设置的远程登陆端口}. After adding it, you can use 22 and the newly added port to log in at the same time.

Press esc, enter :wq, save and exit

Restart the ssh service

sudo systemctl restart sshd

Ps
If you still can't log in using this port, confirm whether the firewall has opened this port.