OSSEC / HIDS Rule 12145

OSSEC / HIDS rule catalog

• Rule family: OSSEC / HIDS
• Rule ID: 12145
• Definition status: Present in current source
• Alert message / subject: zone transfer denied
• Rule level: 1
• Definition checked: 2026-10-21

Interpretation and response

This event is recorded as “zone transfer denied”. Review the originating log and the affected host or service to determine whether the activity was expected.

An OSSEC/HIDS event records or correlates activity. Blocking depends on the originating application and any separately configured Active Response policy; an alert alone does not prove that an attack was blocked.

Documentation

The following guidance was migrated from the historical wiki and reviewed against the rule definition. Legacy ASL product names and interface instructions refer to the versions documented then. Use the current metadata above and your installed configuration when interpreting thresholds, notification settings and response behavior.

Log example:

Illustrative event summary (not a captured log): OSSEC/HIDS 12145 — zone transfer denied.

Explanation:

This log entry shows that the DNS server is denying a system from performing a zone transfer. A zone transfer is a request to access all DNS data for a domain. This is normal for a trusted DNS server to do that is authoritative for the domain, but not normal or required for any other server.

Attackers may use this method to perform reconnaissance on servers before an attack.

Source and revision

Migrated from HIDS_12145, wiki page 250, revision 2074 (20120118). Documentation review: 2026-10-21. An archived wiki status of Active is not a current deployment status.

For assistance, provide the rule ID, installed product and rule version, and a sanitized event to Atomicorp support .