https://blog.serviciosrogeliowar.com/en/tags/nginx/Recent content in Nginx on Servicios RogeliowarHugo -- gohugo.ioen© 2026 Rogelio Guerra RiverónThu, 30 Apr 2026 00:00:00 +0000https://blog.serviciosrogeliowar.com/en/posts/fail2ban-para-proteger-ssh-y-nginx-configuracion-practica-en-ubuntu/Thu, 30 Apr 2026 00:00:00 +0000https://blog.serviciosrogeliowar.com/en/posts/fail2ban-para-proteger-ssh-y-nginx-configuracion-practica-en-ubuntu/<h2 class="relative group">The Problem: Brute Force Attacks <div id="the-problem-brute-force-attacks" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#the-problem-brute-force-attacks" aria-label="Anchor">#</a> </span> </h2> <p>After exposing my Ubuntu server to the internet, I spent a night reviewing logs. SSH received failed login attempts every second. Nginx also had suspicious requests to common routes. I needed something to block these attempts automatically. Fail2ban was my solution.</p> <h2 class="relative group">Installation <div id="installation" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#installation" aria-label="Anchor">#</a> </span> </h2> <div class="highlight-wrapper"><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>sudo apt update </span></span><span style="display:flex;"><span>sudo apt install fail2ban </span></span><span style="display:flex;"><span>sudo systemctl start fail2ban </span></span><span style="display:flex;"><span>sudo systemctl enable fail2ban</span></span></code></pre></div></div> <p>Verify that it&rsquo;s running:</p>