new upstream release (3.3.0); modify package compatibility for Stretch
[ossec-hids.git] / debian / ossec-hids / var / ossec / rules / telnetd_rules.xml
diff --git a/debian/ossec-hids/var/ossec/rules/telnetd_rules.xml b/debian/ossec-hids/var/ossec/rules/telnetd_rules.xml
new file mode 100644 (file)
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--- /dev/null
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+<!-- @(#) $Id: ./etc/rules/telnetd_rules.xml, 2011/09/08 dcid Exp $
+
+  -  Telnetd rules for OSSEC.
+  -  Author: Ahmet Ozturk
+  -  License: http://www.ossec.net/en/licensing.html
+  -->
+      
+
+<group name="syslog,telnetd">
+  <rule id="5600" level="0" noalert="1">
+    <match>telnetd</match>
+    <description>Grouping for the telnetd rules</description>
+  </rule>
+
+  <rule id="5601" level="5">
+    <if_sid>5600</if_sid>
+    <match>refused connect from </match>
+    <description>Connection refused by TCP Wrappers.</description>
+  </rule>
+
+  <rule id="5602" level="3">
+    <if_sid>5600</if_sid>
+    <match>: connect from </match>
+    <description>Remote host established a telnet connection.</description>
+  </rule>
+
+  <rule id="5603" level="5" timeframe="1">
+    <match>ttloop:  peer died:|ttloop:  read:</match>
+    <if_matched_sid>5602</if_matched_sid>
+    <description>Remote host invalid connection.</description>
+  </rule>
+
+  <rule id="5604" level="5">
+    <match>warning: can't verify hostname:</match>
+    <description>Reverse lookup error (bad hostname config).</description>
+  </rule>
+
+  <rule id="5631" level="10" frequency="6" timeframe="120">
+    <if_matched_sid>5602</if_matched_sid>
+    <same_source_ip />
+    <description>Multiple connection attempts from same source </description>
+    <description>(possible scan).</description>
+  </rule>
+
+</group> <!-- SYSLOG,TELNETD -->