I will extend firewall to block countries accessing you linux unix server

Some countries are attacking server all the time, and you will never have business with them.

I have a list of countries where most attacks come from and have a low democracy index.

Check out your logfile / var/ log/ auth.log if there are attacks.

It is best to prevent certain countries to access the server at all.

The firewall will block access to the whole server, not only the login.

I will also install software that protects your ssh login to the server.