Now that you have a basic firewall running, it’s time to adjust your local Fail2Ban configuration file to add more control on securing your server. Previewing your firewall rules Adjusting your Local Fail2Ban Configuration Stop Fail2Ban when you make changes to your configuration files so that you can test the changes and make sure they work as expected. First, run the service command below to stop Fail2Ban ( fail2ban stop) from running. But first, you’ll set up a base firewall where you can add rules to block malicious acts on your server.ġ. Related: How to use the Ansible apt Module to Manage Linux Packages Setting up a Base Firewallįail2Ban protects your server by monitoring the logs and banning IP addresses that make too many login attempts within a certain time frame. Fail2Ban installed in an Ubuntu or Debian server.Root access or sudo privileges on the server to execute commands as a superuser.An Ubuntu and Debian servers – This tutorial uses a server running Ubuntu 18.04 LTS to set up Fail2Ban and a Debian 10 server to test Fail2Ban banning configurations.If you’d like to follow along, be sure you have the following in place: This tutorial comprises step-by-step instructions. Ready? Read on to optimize security for your SSH server! Prerequisites In this tutorial, you’ll learn how to set up Fail2Ban and ward off brute force attacks by securing your SSH server. Worry not though, this tutorial has got you covered. The question is, how exactly? Lucky for you, Fail2Ban is just around the corner to protect your server, but Fail2Ban’s default configuration needs some tweaking for optimal security. Protecting your server from brute force attacks is a must.
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