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# Fail2Ban apache-auth filter
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#
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[INCLUDES]
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# Read common prefixes. If any customizations available -- read them from
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# apache-common.local
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before = apache-common.conf
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[Definition]
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failregex = ^%(_apache_error_client)s (AH(01797|01630): )?client denied by server configuration: (uri )?\S*(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH01617: )?user .*? authentication failure for "\S*": Password Mismatch(, referer: \S+)?$
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^%(_apache_error_client)s (AH01618: )?user .*? not found(: )?\S*(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH01614: )?client used wrong authentication scheme: \S*(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH\d+: )?Authorization of user \S+ to access \S* failed, reason: .*$
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^%(_apache_error_client)s (AH0179[24]: )?(Digest: )?user .*?: password mismatch: \S*(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH0179[01]: |Digest: )user `.*?' in realm `.+' (not found|denied by provider): \S*(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH01631: )?user .*?: authorization failure for "\S*":(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH01775: )?(Digest: )?invalid nonce .* received - length is not \S+(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH01788: )?(Digest: )?realm mismatch - got `.*?' but expected `.+'(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH01789: )?(Digest: )?unknown algorithm `.*?' received: \S*(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH01793: )?invalid qop `.*?' received: \S*(, referer: \S+)?\s*$
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^%(_apache_error_client)s (AH01777: )?(Digest: )?invalid nonce .*? received - user attempted time travel(, referer: \S+)?\s*$
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ignoreregex =
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# DEV Notes:
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#
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# This filter matches the authorization failures of Apache. It takes the log messages
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# from the modules in aaa that return HTTP_UNAUTHORIZED, HTTP_METHOD_NOT_ALLOWED or
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# HTTP_FORBIDDEN and not AUTH_GENERAL_ERROR or HTTP_INTERNAL_SERVER_ERROR.
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#
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# An unauthorized response 401 is the first step for a browser to instigate authentication
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# however apache doesn't log this as an error. Only subsequent errors are logged in the
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# error log.
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#
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# Source:
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#
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# By searching the code in http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/aaa/*
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# for ap_log_rerror(APLOG_MARK, APLOG_ERR and examining resulting return code should get
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# all of these expressions. Lots of submodules like mod_authz_* return back to mod_authz_core
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# to return the actual failure.
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#
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# See also: http://wiki.apache.org/httpd/ListOfErrors
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# Expressions that don't have tests and aren't common.
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# more be added with https://issues.apache.org/bugzilla/show_bug.cgi?id=55284
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# ^%(_apache_error_client)s (AH01778: )?user .*: nonce expired \([\d.]+ seconds old - max lifetime [\d.]+\) - sending new nonce\s*$
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# ^%(_apache_error_client)s (AH01779: )?user .*: one-time-nonce mismatch - sending new nonce\s*$
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# ^%(_apache_error_client)s (AH02486: )?realm mismatch - got `.*' but no realm specified\s*$
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#
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# referer is always in error log messages if it exists added as per the log_error_core function in server/log.c
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#
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# Author: Cyril Jaquier
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# Major edits by Daniel Black
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