Is it possible to add own jails to fail2ban?

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1
SYSTEM INFORMATION
OS type and version AlmaLinux 10.2
Virtualmin version 8.2

I just noticed that fail2ban has been set up by virtualmin (or webmin) with its own jail.local file. I have some filters of my own, based on earlier hacking attempts, to keep people (rather bots) away which show a certain access pattern. Can I add these filters to the jail.local file, or should I add (and link) another jail-file? The question arises because it is likely that Webmin or Virtualmin might overwrite jail.local at any time, losing the settings I added.

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jail.local is yours unlike jail.conf which may get updated by program updates.

Same applies if you want to make filters etc. If there is a .conf and a .local, the .conf is read first, then overwritten by .local

So don’t edit .conf files, make a .local that has your changes.

3

Webmin/Virtualmin does not overwrite config files. We parse and edit config files. So, if you configure your services via CLI or other tools, Webmin/Virtualmin will generally not have a problem with it (assuming valid and parsable configuration files after your edits).