How to change sshd port and do it in wrong way?

@laks wrote:

Its a matter of two step process! First

Step 1) You need to have root (or sudo) permission to change/edit this file


/etc/ssh/sshd_config


Step 2) As you know sshd default listens on port 22, so find the line


#Port 22


and replace the port number to something else


#Port 12345


That's it . right ?

Now login to your server with above port


ssh -p 12345 user@serverip


You must get an error message like


ssh: connect to host serverip port 12345: Connection refused


Why it didn't work ?

There are two mistakes we did while changing /etc/ssh/sshd_config file.

Mistake 1) We forgot to un-comment the line


#Port 12345


Every line beginning with # will be treated as comment. So you must un-comment that line first


Port 12345


Mistake 2) We didn't restart the sshd service. You must restart the sshd server to ensure these new changes are applied.


service sshd restart


And now login to your server with above port


ssh -p 12345 user@serverip


It should prompt you for password..

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