Installing and configuring Fail2ban
Fail2ban, how I love thee! Fail2ban is one of those tools that once I learned how valuable it is, I wondered how I ever lived so long without it. Fail2ban is able to keep an eye on your log files, looking for authentication failures. You can set the number of failures that are allowed from any given IP address, and if there are more than the allowed number of failures, Fail2ban will block that individual’s IP address. It’s highly configurable and can enhance the security of your server.
Installing and configuring Fail2ban is relatively straightforward. First, install its package:
sudo apt install fail2ban
After installation, the fail2ban daemon will start up and be configured to automatically start at boot time. Configuring fail2ban is simply a matter of creating a configuration file. But this is one of the more interesting aspects of Fail2ban: you shouldn’t use its default config file. The default file is /etc...
