Add new jail (and filter) Monitorix

config/filter.d/monitorix.conf

@@ -0,0 +1,25 @@
+# Fail2Ban filter for Monitorix (HTTP built-in server)
+#
+
+[INCLUDES]
+
+before = common.conf
+
+[Definition]
+
+_daemon = monitorix-httpd
+
+# Option:  failregex
+# Notes.:  regex to match the password failures messages in the logfile. The
+#          host must be matched by a group named "host". The tag "<HOST>" can
+#          be used for standard IP/hostname matching and is only an alias for
+#          (?:::f{4,6}:)?(?P<host>\S+)
+# Values:  TEXT
+#
+failregex = ^(?:\s+-)?\s*(?:NOTEXIST|AUTHERR|NOTALLOWED) - <ADDR>\b
+
+# Option:  ignoreregex
+# Notes.:  regex to ignore. If this regex matches, the line is ignored.
+# Values:  TEXT
+#
+ignoreregex =

config/jail.conf

@@ -974,3 +974,7 @@ logpath = /var/log/traefik/access.log
 [scanlogd]
 logpath = %(syslog_local0)s
 banaction = %(banaction_allports)s
+
+[monitorix]
+port	= 8080
+logpath = /var/log/monitorix-httpd

fail2ban/tests/files/logs/monitorix

@@ -0,0 +1,8 @@
+# failJSON: { "time": "2021-04-14T08:11:01", "match": false, "desc": "should be ignored: successful request" }
+Wed Apr 14 08:11:01 2021 - OK - [127.0.0.1] "GET /monitorix-cgi/monitorix.cgi - Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0"
+# failJSON: { "time": "2021-04-14T08:54:22", "match": true, "host": "127.0.0.1", "desc": "file does not exist"  }
+Wed Apr 14 08:54:22 2021 - NOTEXIST - [127.0.0.1] File does not exist: /manager/html
+# failJSON: { "time": "2021-04-14T11:24:31", "match": true, "host": "127.0.0.1", "desc": "access not allowed"  }
+Wed Apr 14 11:24:31 2021 - NOTALLOWED - [127.0.0.1] Access not allowed: /monitorix/
+# failJSON: { "time": "2021-04-14T11:26:08", "match": true, "host": "127.0.0.1", "desc": "authentication error"  }
+Wed Apr 14 11:26:08 2021 - AUTHERR - [127.0.0.1] Authentication error: /monitorix/