https://www.nico-maas.de/tags/fail2ban/ Recent content in Fail2ban on Nico Maas Hugo -- gohugo.io en-us Wed, 17 Feb 2021 10:22:00 +0000 https://www.nico-maas.de/posts/2021-02-17-fail2ban-cheat-sheet/ Wed, 17 Feb 2021 10:22:00 +0000 https://www.nico-maas.de/posts/2021-02-17-fail2ban-cheat-sheet/ <p>Just the commands I always need to look up, because I forgot again&hellip;</p> <ul> <li>Overview over fail2ban status and jails</li> </ul> <pre tabindex="0"><code>fail2ban-client status </code></pre><ul> <li>See which e.g. IPs are banned for sshd jail</li> </ul> <pre tabindex="0"><code>fail2ban-client status sshd </code></pre><ul> <li>Unban an IP from sshd jail</li> </ul> <pre tabindex="0"><code>fail2ban-client set sshd unbanip IPADDRESSHERE </code></pre><ul> <li>See which systems are actually banned</li> </ul> <pre tabindex="0"><code>zgrep &#39;Ban&#39; /var/log/fail2ban.log* </code></pre>