Policy Change Event: 850

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The Who, Where and When information is very important for an administrator to have complete knowledge of all activities that occur on their Active Directory. This helps them identify any desired / undesired activity happening. ADAudit Plus assists an administrator with this information in the form of reports. In real-time, ensure critical resources in the network like the Domain Controllers are audited, monitored and reported with the entire information on AD objects - Users, Groups, GPO, Computer, OU, DNS, AD Schema and Configuration changes with 200+ detailed event specific GUI reports and email alerts.

Process Tracking » Policy Change Event: 850

Event ID 850 – A port was listed as an exception when the Windows Firewall started.

Event ID 850
Category Policy Change
Type Success Audit

Event 850 is logged whenever Windows Firewall is started and there are existing port excpetions. This event is generated for every port exception that Windows comes across.

Note: This event is triggered only for Public profiles.

The event log has the following information:

  • Policy Origin
  • Profile Used
  • Interface
  • Name
  • Port Number
  • Protocol
  • State
  • Scope

Why does event ID 850 need to be monitored?

While event 850 is logged typically for informational purposes, it can be used to compare the Public profile Windows Firewall baseline for different computers. Alerts can be set so that if the configuration is different, the administrator is notified.

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.

Event 850 applies to the following operating systems:

  • Windows Server 2000
  • Windows 2003 and XP

Corresponding event ID in Windows 2008 and Windows Vista is 4945.

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