--- /dev/null
+<!-- @(#) $Id: ./etc/rules/nginx_rules.xml, 2011/09/08 dcid Exp $
+
+ - Official Nginx rules for OSSEC.
+ -
+ - Copyright (C) 2009 Trend Micro Inc.
+ - All rights reserved.
+ -
+ - This program is a free software; you can redistribute it
+ - and/or modify it under the terms of the GNU General Public
+ - License (version 2) as published by the FSF - Free Software
+ - Foundation.
+ -
+ - License details: http://www.ossec.net/en/licensing.html
+ -->
+
+
+<group name="apache,">
+ <rule id="31300" level="0">
+ <decoded_as>nginx-errorlog</decoded_as>
+ <description>Nginx messages grouped.</description>
+ </rule>
+
+ <rule id="31301" level="3">
+ <if_sid>31300</if_sid>
+ <regex>^\S+ \S+ [error] </regex>
+ <description>Nginx error message.</description>
+ </rule>
+
+ <rule id="31302" level="3">
+ <if_sid>31300</if_sid>
+ <regex>^\S+ \S+ [warn] </regex>
+ <description>Nginx warning message.</description>
+ </rule>
+
+ <rule id="31303" level="5">
+ <if_sid>31300</if_sid>
+ <regex>^\S+ \S+ [crit] </regex>
+ <description>Nginx critical message.</description>
+ </rule>
+
+ <rule id="31310" level="0">
+ <if_sid>31301</if_sid>
+ <match>failed (2: No such file or directory)|is not found (2: No such file or directory)</match>
+ <description>Server returned 404 (reported in the access.log).</description>
+ </rule>
+
+ <rule id="31311" level="0">
+ <if_sid>31301</if_sid>
+ <match>accept() failed (53: Software caused connection abort)</match>
+ <description>Incomplete client request.</description>
+ </rule>
+
+ <rule id="31312" level="0">
+ <if_sid>31301</if_sid>
+ <match>no user/password was provided for basic authentication</match>
+ <description>Initial 401 authentication request.</description>
+ </rule>
+
+ <rule id="31315" level="5">
+ <if_sid>31301</if_sid>
+ <match> password mismatch, client| was not found in </match>
+ <description>Web authentication failed.</description>
+ <group>authentication_failed,</group>
+ </rule>
+
+ <rule id="31316" level="10" frequency="6" timeframe="240">
+ <if_matched_sid>31315</if_matched_sid>
+ <same_source_ip />
+ <description>Multiple web authentication failures.</description>
+ <group>authentication_failures,</group>
+ </rule>
+
+ <rule id="31317" level="0">
+ <if_sid>31303</if_sid>
+ <match>failed (2: No such file or directory</match>
+ <description>Common cache error when files were removed.</description>
+ </rule>
+
+ <rule id="31320" level="10">
+ <if_sid>31301</if_sid>
+ <match>failed (36: File name too long)</match>
+ <description>Invalid URI, file name too long.</description>
+ <group>invalid_request,</group>
+ </rule>
+</group> <!-- ERROR_LOG,NGINX -->
+
+<!-- EOF -->
+