Policy Change Event: 852

Event ID 852 – A change has been made to the Windows Firewall port exception list.

Any change made to the Windows Firewall port exception list triggers event 852. The change in the list can be of any type—it can be the addition, modification, or deletion of a port exception. These changes are generally instituted by an administrator or a group policy refresh.

This log data provides the following information:

• Policy Origin
• Profile Changed
• Interface
• Change Type
• New Settings - Name
• New Settings - Port Number
• New Settings - Protocol
• New Settings - State
• New Settings - Scope
• Old Settings - Name
• Old Settings - Port Number
• Old Settings - Protocol
• Old Settings - State
• Old Settings - Scope

Why does event ID 852 need to be monitored?

• To monitor the new port exceptions which were created locally
• To monitor the port exception modifications which were carried out locally
• To monitor all the deletions of Firewall port exceptions which were done locally

Pro Tip:

ADAudit Plus helps you avoid the GPOs monitoring complexities with real-time pre-configured reports and auditing of the changes along with alerts within a Domain & OU. The advanced Group Policy settings real-time audit reports highlight the elusive change details, and also provide the old and new values of the modified attributes.