https://dikapediav2.com/wiki/index.php?action=history&feed=atom&title=Fail2ban 2026-04-22T17:19:41Z Revision history for this page on the wiki MediaWiki 1.41.0 https://dikapediav2.com/wiki/index.php?title=Fail2ban&diff=75&oldid=prev 2024-08-27T00:14:57Z

<p>Created page with &quot;&lt;b&gt;Fail2ban&lt;/b&gt; - a set of server and client programs to limit brute force authentication attempts. ====How to set up fail2ban for ssh:==== ---- 1) Install fail2ban&lt;/br&gt; 2) Create a new file by copying jail.conf to a new file called jail.local ‘cp jail.conf jail.local’ 3) Configure jail.local: &lt;b&gt;Bantime&lt;/b&gt;; number of seconds that a host is banned. &lt;b&gt;Findtime&lt;/b&gt;; the max amount of time to complete the login process. If they don’t do it, they will be banned...&quot;</p> <p><b>New page</b></p><div>&lt;b&gt;Fail2ban&lt;/b&gt; - a set of server and client programs to limit brute force authentication attempts.<br /> <br /> <br /> ====How to set up fail2ban for ssh:====<br /> ----<br /> <br /> 1) Install fail2ban&lt;/br&gt;<br /> 2) Create a new file by copying jail.conf to a new file called jail.local<br /> ‘cp jail.conf jail.local’<br /> <br /> 3) Configure jail.local:<br /> &lt;b&gt;Bantime&lt;/b&gt;; number of seconds that a host is banned.<br /> &lt;b&gt;Findtime&lt;/b&gt;; the max amount of time to complete the login process. If they don’t do it, they will be banned too. <br /> &lt;b&gt;Maxretry&lt;/b&gt;; the number of failures before a host gets banned.<br /> &lt;b&gt;[sshd]&lt;/b&gt; section:<br /> *&lt;b&gt;Enabled = true&lt;/b&gt;; ‘enabled’ enables the jails. By default all jails are disabled, and it should stay this way. Enable only relevant to your setup jails in your .local or jail.d/*.conf. True will enable jail and log files will get monitored for changes. False will not enable jail.<br /> *&lt;b&gt;Logpath&lt;/b&gt; and &lt;b&gt;backend&lt;/b&gt; set to default.<br /> *&lt;b&gt;Port&lt;/b&gt; is set to whatever port you have SSHD listening on. <br /> logpath = %(sshd_log)s<br /> backend = %(sshd_backend)s<br /> Port = ssh (or of your choice); <br /> 4) Restart fail2ban:<br /> systemctl restart fail2ban.service<br /> <br /> <br /> ----<br /> <br /> <br /> If necessary:&lt;/br&gt;<br /> Configure /etc/ssh/sshd_config:&lt;/br&gt;<br /> Port [of your choice]&lt;/br&gt;<br /> Restart program.<br /> <br /> <br /> ----<br /> <br /> <br /> https://docs.google.com/document/d/1PXncSD021pXuONWIAn-wUZoBu6MeysQHAwZqPRoPgJY/edit?usp=sharing</div>

Ardika Sulistija