What is the effects of adding “Listen 443” to “sshd_config”

Question

I was following this tutorial tutorial where i added this line Listen 443 to sshd_config without changing anything else, now i can no longer connect to the default 22 port

Answer 1

Adding Listen 443 into sshd_config and restarting sshd service makes the service fail, because there is no such configuration option recognized by OpenSSH. For more information about configuration options, refer to the manual page for sshd_config.

To be constructive, the correct option should be Port 443 instead.