etc/rules/vpopmail_rules.xml

   1 <!-- @(#) $Id$
   2   -  Official rules for vpopmail.
   3   -
   4   -  Author: Ceg Ryan <cegryan ( at ) gmail.com>
   5   -  License: http://www.ossec.net/en/licensing.html
   6   -->
   7
   8
   9 <group name="syslog,vpopmail,">
  10   <rule id="9900" level="0">
  11     <decoded_as>vpopmail</decoded_as>
  12     <description>Grouping for the vpopmail rules.</description>
  13   </rule>
  14
  15   <rule id="9901" level="5">
  16     <if_sid>9900</if_sid>
  17     <match> password fail </match>
  18     <group>authentication_failed,</group>
  19     <description>Login failed for vpopmail.</description>
  20   </rule>
  21
  22   <rule id="9902" level="5">
  23     <if_sid>9900</if_sid>
  24     <match> vpopmail user not found </match>
  25     <group>invalid_login,</group>
  26     <description>Attempt to login to vpopmail with invalid username.</description>
  27   </rule>
  28
  29   <rule id="9903" level="5">
  30     <if_sid>9900</if_sid>
  31     <match> null password given </match>
  32     <group>authentication_failed,</group>
  33     <description>Attempt to login to vpopmail with empty password.</description>
  34   </rule>
  35
  36   <rule id="9904" level="1">
  37     <if_sid>9900</if_sid>
  38     <match> login success </match>
  39     <group>authentication_success,</group>
  40     <description>Vpopmail successful login.</description>
  41   </rule>
  42
  43
  44   <rule id="9951" level="10" frequency="8" timeframe="240">
  45     <if_matched_sid>9901</if_matched_sid>
  46     <same_source_ip />
  47     <description>Vpopmail brute force (multiple failed logins).</description>
  48     <group>authentication_failures,</group>
  49   </rule>
  50
  51   <rule id="9952" level="10" frequency="8" timeframe="240">
  52     <if_matched_sid>9902</if_matched_sid>
  53     <same_source_ip />
  54     <description>Vpopmail brute force (email harvesting).</description>
  55     <group>authentication_failures,</group>
  56   </rule>
  57
  58   <rule id="9953" level="10" frequency="8" timeframe="240">
  59     <if_matched_sid>9903</if_matched_sid>
  60     <same_source_ip />
  61     <description>VPOPMAIL brute force (empty password).</description>
  62     <group>authentication_failures,</group>
  63   </rule>
  64
  65 </group>
  66
  67 <!-- EOF -->