Port 22 is the default port used by a Linux SSH Server (Open SSH). This is not just known to the server administrators but the hackers and attackers as well. Well incase you have implemented different security measures for your web hosting UK server, then it may not be a concern for you. However, changing the port of your SSH can add to the security of your server.
Changing the default port 22 to something else on your hosting server can be something like preventing the hackers from accessing your server from the front door. Though you should note that this process would not make your server 100% safe from intrusion, but it can definitely keep professional hackers busy with finding other vulnerabilities on the server. Plus it would enhance the SSH Security of Server.
How to change the SSH port of a Linux Hosting Server ?
Step 1 : Login to your server as Root
Step 3 : Search for a line that has :
Step 4 : Amend the port number with something of your preference.
Note : You must ensure that the new port number is free and isn’t used by any other service.
Step 5 : Once you are sure about the changes, make sure that you Save the file
Step 6 : You may then restart sshd using the following command :
Step 7 : Make changes to the firewall with blocking Port 22 and allowing the new Port number used by SSH.
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