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problem with regex in Fail2ban

Posted on June 30, 2017

Bonjour,

I try to enter a new jail for my fail2ban, but I’m not really good in regex. My line to analyse is : 2017/06/30 06:15:19 [info] 2144#0: 257197 upstream sent invalid response: “NO AUTHENTICATE failed” while reading response from upstream, client: 59.61.79.82:33407, server: 0.0.0.0:993 and I try with failregex = . upstream sent invalid response: '.’ \client: ‘<HOST>’
and the error is ERROR Unable to compile regular expression '.
upstream sent invalid response: ‘.’ \client: '(?:::f{4,6}:)?(?P<host>[\w-.^_]\w)’' I try to change a part, to find a good way… but nothing good, and all the time this error.

Thanks for your help.

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