Ssh config editor install#

Once you've changed the port and saved the file, restart the SSH server: $ sudo systemctl restart sshd 2. The line may be commented because 22 is the default (so it doesn't need to be explicitly declared in the config), so uncomment the line before saving. To change the default port for SSH, open /etc/ssh/sshd_config in your favorite text editor and change the value of the Port from 22 to some number greater than 1024. After changing the port to a much higher number, TCP 45678, the average of people connecting and guessing any username or password was two per day. It's a favor you can do yourself to cut out a good amount of noise from your logs.įor this article, I had an SSH server default port TCP 22 over one cloud provider, and the average attacks per minute were 24. Anyone with a port scanner can discover an SSH port even after you moved it, so you're hardly removing yourself from harm's way, but you do conveniently avoid hundreds of unsophisticated scripts launched against your server. This is the one that not all administrators remember. The default settings are generally very conservative, but I tend to make some adjustments to optimize my SSH experience and protect my servers from unauthorized access.

Ssh config editor install#

Once you install this package, you have a file named sshd_config that controls most of the behavior of the service. The most common implementation of the SSH protocol is OpenSSH, developed by the OpenBSD project and available to most Linux and Unix-like operating systems. Free online course: RHEL Technical Overview.