fail2ban/config/filter.d/nginx-botsearch.conf

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# Fail2Ban filter to match web requests for selected URLs that don't exist
#
[Definition]
failregex = ^<HOST> \- \S+ \[\] \"(GET|POST) \/<block> \S+\" 404 .+$
^ \[error\] \d+#\d+: \*\d+ (\S+ )?\"\S+\" (failed|is not found) \(2\: No such file or directory\), client\: <HOST>\, server\: \S*\, request: \"(GET|POST) \/<block> \S+\"\, .*?$
ignoreregex =
[Init]
# Block is the actual non-found directories to block
block = \/?(<webmail>|<phpmyadmin>|<wordpress>|cgi-bin|mysqladmin)[^,]*
# These are just convient definitions that assist the blocking of stuff that
# isn't installed
webmail = roundcube|(ext)?mail|horde|(v-?)?webmail
phpmyadmin = (typo3/|xampp/|admin/|)(pma|(php)?[Mm]y[Aa]dmin)
wordpress = wp-(login|signup)\.php
# DEV Notes:
# Based on apache-botsearch filter
#
# Author: Frantisek Sumsal