Warning:

Remember the ssh port you’ve chosen, otherwise you’ll no longer be able to connect!
If using a firewall be sure to open/forward the newly set ssh port! Otherwise you’ll also be locked out!

Change the ssh listen port from default (22/TCP) to something random

Open /etc/ssh/sshd_config and change:

#Port 22

to your custom port, e.g. 42815:

Port 42815

Save and restart sshd.

Combine this with forced key based ssh auth and youre ssh setup will be a bit more secure!

Benjamin Wiedmann is an IT Professional, Software Developer, Photograph and Musician. Read more...

Benjamin Wiedmann is an IT Professional, Software Developer, Photograph and Musician. Read more...

Securing OpenSSH: change ssh listen port from port 22/tcp to something more random