Mediamtx and fail2ban in linux

[adzmailru]

Hello, in order to write a fail2ban filter, you can start by enabling debug logging inside MediaMTX:

logLevel: debug

The log lines you're interested into are these ones:
2024/08/27 23:06:55 DEB [RTSP] [conn 127.0.0.1:44480] [s->c] RTSP/1.0 401 Unauthorized
CSeq: 2

filter file of mediamtx (/etc/fail2ban/filter.d/mediamtxxxx.local):

[Init]
maxlines = 2

[Definition]
failregex = .* DEB \[RTSP\] \[conn <HOST>:\d+\] \[s->c\] RTSP\/1\.0 401 Unauthorized\nCSeq: 2
ignoreregex =