1 <!-- @(#) $Id: ./etc/rules/named_rules.xml, 2011/09/08 dcid Exp $
3 - Example of Named rules for OSSEC.
5 - Copyright (C) 2009 Trend Micro Inc.
8 - This program is a free software; you can redistribute it
9 - and/or modify it under the terms of the GNU General Public
10 - License (version 2) as published by the FSF - Free Software
13 - License details: http://www.ossec.net/en/licensing.html
17 <group name="syslog,named,">
18 <rule id="12100" level="0">
19 <decoded_as>named</decoded_as>
20 <description>Grouping of the named rules</description>
23 <rule id="12101" level="12">
24 <if_sid>12100</if_sid>
25 <match>dropping source port zero packet from</match>
26 <description>Invalid DNS packet. Possibility of attack.</description>
27 <group>invalid_access,</group>
30 <rule id="12102" level="9">
31 <if_sid>12100</if_sid>
32 <match>denied AXFR from</match>
33 <description>Failed attempt to perform a zone transfer.</description>
34 <group>access_denied,</group>
37 <rule id="12103" level="4">
38 <if_sid>12100</if_sid>
39 <match>denied update from|unapproved update from</match>
40 <description>DNS update denied. </description>
41 <description>Generally mis-configuration.</description>
42 <info type="link">http://seclists.org/incidents/2000/May/217</info>
43 <group>client_misconfig,</group>
46 <rule id="12104" level="4">
47 <if_sid>12100</if_sid>
48 <match>unable to rename log file</match>
49 <description>Log permission misconfiguration in Named.</description>
50 <group>system_error,</group>
53 <rule id="12105" level="4">
54 <if_sid>12100</if_sid>
55 <match>unexpected RCODE </match>
56 <description>Unexpected error while resolving domain.</description>
59 <rule id="12106" level="4">
60 <if_sid>12100</if_sid>
61 <match>refused notify from non-master</match>
62 <description>DNS configuration error.</description>
65 <rule id="12107" level="0">
66 <if_sid>12100</if_sid>
67 <regex>update \S+ denied</regex>
68 <description>DNS update using RFC2136 Dynamic protocol.</description>
71 <rule id="12108" level="0">
72 <if_sid>12100</if_sid>
73 <match>query (cache) denied|: query (cache)</match>
74 <description>Query cache denied (probably config error).</description>
75 <info type="link">http://www.reedmedia.net/misc/dns/errors.html</info>
78 <rule id="12109" level="12">
79 <if_sid>12100</if_sid>
80 <match>exiting (due to fatal error)</match>
81 <description>Named fatal error. DNS service going down.</description>
82 <group>service_availability,</group>
85 <rule id="12110" level="8">
86 <regex>^zone \S+ serial number \S+ received from master </regex>
87 <regex>\S+ \S ours (\S+)</regex>
88 <description>Serial number from master is lower </description>
89 <description>than stored.</description>
90 <group>system_error,</group>
93 <rule id="12111" level="8">
94 <regex>^transfer of \S+ from \S+ failed while receiving \S+ REFUSED</regex>
95 <description>Unable to perform zone transfer.</description>
96 <group>system_error,</group>
99 <rule id="12112" level="4">
100 <regex>^zone \S+: expired</regex>
101 <description>Zone transfer error.</description>
104 <rule id="12113" level="0">
105 <if_sid>12100</if_sid>
106 <match>zone transfer deferred due to quota</match>
107 <description>Zone transfer deferred.</description>
110 <rule id="12114" level="1">
111 <if_sid>12100</if_sid>
112 <match>bad owner name (check-names)</match>
113 <description>Hostname contains characters that check-names does not like.</description>
116 <rule id="12115" level="0">
117 <if_sid>12100</if_sid>
118 <match>loaded serial|transferred serial</match>
119 <description>Zone transfer.</description>
122 <rule id="12116" level="1">
123 <if_sid>12100</if_sid>
124 <match>syntax error near|</match>
125 <match>reloading configuration failed: unexpected token</match>
126 <description>Syntax error in a named configuration file.</description>
130 <rule id="12117" level="1">
131 <if_sid>12100</if_sid>
132 <regex>refresh: retry limit for master \S+ exceeded</regex>
133 <description>Zone transfer rety limit exceeded</description>
136 <rule id="12118" level="1">
137 <if_sid>12100</if_sid>
138 <match>already exists previous definition</match>
139 <description>Zone has been duplicated.</description>
142 <rule id="12119" level="3">
143 <if_sid>12100</if_sid>
144 <match>starting BIND</match>
145 <description>BIND has been started</description>
148 <rule id="12120" level="1">
149 <if_sid>12100</if_sid>
150 <match>has no address records</match>
151 <description>Missing A or AAAA record</description>
154 <rule id="12121" level="1">
155 <if_sid>12100</if_sid>
156 <regex>zone \S+: \(master\) removed</regex>
157 <description>Zone has been removed from a master server</description>
160 <rule id="12122" level="1">
161 <if_sid>12100</if_sid>
162 <regex>loading from master file \S+ failed: not at top of zone$</regex>
163 <description>Origin of zone and owner name of SOA do not match.</description>
166 <rule id="12123" level="0">
167 <if_sid>12100</if_sid>
168 <match>already exists previous definition</match>
169 <description>Zone has been duplicated</description>
172 <rule id="12125" level="3">
173 <if_sid>12100</if_sid>
174 <match>reloading configuration failed: unexpected end of input</match>
175 <description>BIND Configuration error.</description>
178 <rule id="12126" level="0">
179 <if_sid>12100</if_sid>
180 <regex>zone \S+: \(master\) removed</regex>
181 <description>Zone has been removed from a master server</description>
184 <rule id="12127" level="1">
185 <if_sid>12100</if_sid>
186 <regex>loading from master file \S+ failed: not at top of zone$</regex>
187 <description>Origin of zone and owner name of SOA do not match.</description>
190 <rule id="12128" level="1">
191 <if_sid>12100</if_sid>
192 <match>^transfer of|</match>
193 <match>AXFR started$</match>
194 <description>Zone transfer.</description>
197 <rule id="12129" level="4">
198 <if_sid>12128</if_sid>
199 <match>failed to connect: connection refused</match>
200 <description>Zone transfer failed, unable to connect to master.</description>
203 <rule id="12130" level="2">
204 <if_sid>12100</if_sid>
205 <match>IPv6 interfaces failed</match>
206 <description>Could not listen on IPv6 interface.</description>
209 <rule id="12131" level="2">
210 <if_sid>12100</if_sid>
211 <match>failed; interface ignored</match>
212 <description>Could not bind to an interface.</description>
215 <rule id="12132" level="0">
216 <if_sid>12128</if_sid>
217 <match>failed while receiving responses: not authoritative</match>
218 <description>Master is not authoritative for zone.</description>
221 <rule id="12133" level="4">
222 <if_sid>12100</if_sid>
223 <regex>open: \S+: permission denied$</regex>
224 <description>Could not open configuration file, permission denied.</description>
227 <rule id="12134" level="4">
228 <if_sid>12100</if_sid>
229 <match>loading configuration: permission denied</match>
230 <description>Could not open configuration file, permission denied.</description>
233 <rule id="12135" level="0">
234 <if_sid>12100</if_sid>
235 <match>IN SOA -E</match>
236 <description>Domain in SOA -E.</description>
239 <rule id="12136" level="4">
240 <if_sid>12128</if_sid>
241 <match>failed to connect: host unreachable</match>
242 <description>Master appears to be down.</description>
245 <rule id="12137" level="0">
246 <if_sid>12100</if_sid>
247 <match>IN AXFR -</match>
248 <description>Domain is queried for a zone transferred.</description>
251 <rule id="12138" level="0">
252 <if_sid>12100</if_sid>
253 <match> IN A +</match>
254 <description>Domain A record found.</description>
257 <rule id="12139" level="3">
258 <if_sid>12100</if_sid>
259 <regex>client \S+: bad zone transfer request: \S+: non-authoritative zone \(NOTAUTH\)</regex>
260 <description>Bad zone transfer request.</description>
263 <rule id="12140" level="2">
264 <if_sid>12100</if_sid>
265 <match>refresh: failure trying master</match>
266 <description>Cannot refresh a domain from the master server.</description>
269 <rule id="12141" level="1">
270 <if_sid>12100</if_sid>
271 <match>SOA record not at top of zone</match>
272 <description>Origin of zone and owner name of SOA do not match.</description>
275 <rule id="12142" level="0">
276 <if_sid>12100</if_sid>
277 <match>command channel listening on</match>
278 <description>named command channel is listening.</description>
281 <rule id="12143" level="0">
282 <if_sid>12100</if_sid>
283 <match>automatic empty zone</match>
284 <description>named has created an automatic empty zone.</description>
287 <rule id="12144" level="9">
288 <if_sid>12100</if_sid>
289 <match>reloading configuration failed: out of memory</match>
290 <description>Server does not have enough memory to reload the configuration.</description>
293 <rule id="12145" level="1">
294 <if_sid>12100</if_sid>
295 <regex>zone transfer \S+ denied</regex>
296 <description>zone transfer denied</description>
299 <rule id="12146" level="0">
300 <if_sid>12100</if_sid>
301 <match>error sending response: host unreachable$</match>
302 <description>Cannot send a DNS response.</description>
305 <rule id="12147" level="0">
306 <if_sid>12100</if_sid>
307 <regex>update forwarding \.+ denied$</regex>
308 <description>Cannot update forwarding domain.</description>
311 <rule id="12148" level="0">
312 <if_sid>12100</if_sid>
313 <match>: parsing failed$</match>
314 <description>Parsing of a configuration file has failed.</description>
317 </group> <!-- SYSLOG,NAMED -->