Greetings Peter:

If all you are doing is taking the same rule but wanting to change the
level to avoid notification, then copy the rule to local_rules.xml and
use the
overwrite="yes" option.

Example:

<group name="syslog,vpopmail,">
  <rule id="9951" level="10" frequency="20" timeframe="60"
overwrite="yes">
    <if_matched_sid>9901</if_matched_sid>
    <same_source_ip />
    <description>POP3 brute force (multiple failed logins).</
description>
    <group>authentication_failures,</group>
  </rule>

  <rule id="9952" level="10" frequency="20" timeframe="60"
overwrite="yes">
    <if_matched_sid>9902</if_matched_sid>
    <same_source_ip />
    <description>POP3 brute force (email harvesting).</description>
    <group>authentication_failures,</group>
  </rule>
</group>

Then restart ossec.

Thank you.

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