Fail2ban Info

Some useful info:

http://linux-notes.org/ustanovka-fail2ban/
https://github.com/Bebef/fail2ban-filter.d
https://stackoverflow.com/questions/19794107/fail2ban-error-can´t-ban-with-lighttpd-auth
https://easyengine.io/tutorials/nginx/fail2ban/

Check who’s banned:

fail2ban-client status JAILNAME

fail2ban alerts sent to a Rocket.Chat channel:

https://forums.rocket.chat/t/fail2ban-and-rocket-chat-integration/2544

Incremental bantime:

https://habr.com/ru/post/238303/