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Firewall Rule Processing

  • Article

Applies To: Windows Server 2008

Windows Firewall with Advanced Security receives its rules from local security policy stored in the system registry, and from Group Policy delivered by Active Directory. After receiving a new or modified policy, Windows Firewall must process each rule in the applied policies to interpret what network traffic is to be blocked, allowed, or protected by using Internet Protocol security (IPsec).

When appropriate auditing events are enabled (https://go.microsoft.com/fwlink/?linkid=92666), Windows reports successes and failures, both in retrieving policy and in processing the rules defined in the policy.

Events

Event ID Source Message

4946

Microsoft-Windows-Security-Auditing

 A change has been made to Windows Firewall exception list. A rule was added.
%t
Profile Changed:%t%1

Added Rule:
%tRule ID:%t%2
%tRule Name:%t%3

4947

Microsoft-Windows-Security-Auditing

 A change has been made to Windows Firewall exception list. A rule was modified.
%t
Profile Changed:%t%1

Modified Rule:
%tRule ID:%t%2
%tRule Name:%t%3

4948

Microsoft-Windows-Security-Auditing

 A change has been made to Windows Firewall exception list. A rule was deleted.
%t
Profile Changed:%t%1

Deleted Rule:
%tRule ID:%t%2
%tRule Name:%t%3

4951

Microsoft-Windows-Security-Auditing

 A rule has been ignored because its major version number was not recognized by Windows Firewall.
%t
Profile:%t%1

Ignored Rule:
%tID:%t%2
%tName:%t%3

4952

Microsoft-Windows-Security-Auditing

 Parts of a rule have been ignored because its minor version number was not recognized by Windows Firewall. The other parts of the rule will be enforced.
%t
Profile:%t%1

Partially Ignored Rule:
%tID:%t%2
%tName:%t%3

4953

Microsoft-Windows-Security-Auditing

 A rule has been ignored by Windows Firewall because it could not parse the rule.
%t
Profile:%t%1

Reason for Rejection:%t%2

Rule:
%tID:%t%3
%tName:%t%4

4954

Microsoft-Windows-Security-Auditing

 Windows Firewall Group Policy settings has changed. The new settings have been applied.

4957

Microsoft-Windows-Security-Auditing

 Windows Firewall did not apply the following rule:

Rule Information:
%tID:%t%1
%tName:%t%2

Error Information:
%tReason:%t%3 resolved to an empty set.

4958

Microsoft-Windows-Security-Auditing

 Windows Firewall did not apply the following rule because the rule referred to items not configured on this computer:

Rule Information:
%tID:%t%1
%tName:%t%2

Error Information:
%tError:%t%3
%tReason:%t%4

5027

Microsoft-Windows-Security-Auditing

 The Windows Firewall Service was unable to retrieve the security policy from the local storage. The service will continue enforcing the current policy.

Error Code:%t%1

5028

Microsoft-Windows-Security-Auditing

 The Windows Firewall Service was unable to parse the new security policy. The service will continue with currently enforced policy.

Error Code:%t%1

5040

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. An Authentication Set was added.
%t
Profile Changed:%t%t%1

Added Authentication Set:
%tID:%t%t%t%2
%tName:%t%t%t%3

5041

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. An Authentication Set was modified.
%t
Profile Changed:%t%t%1

Modified Authentication Set:
%tID:%t%t%t%2
%tName:%t%t%t%3

5042

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. An Authentication Set was deleted.
%t
Profile Changed:%t%t%1

Deleted Authentication Set:
%tID:%t%t%t%2
%tName:%t%t%t%3

5043

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. A Connection Security Rule was added.
%t
Profile Changed:%t%t%1

Added Connection Security Rule:
%tID:%t%t%t%2
%tName:%t%t%t%3

5044

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. A Connection Security Rule was modified.
%t
Profile Changed:%t%1

Modified Connection Security Rule:
%tID:%t%t%t%2
%tName:%t%t%t%3

5045

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. A Connection Security Rule was deleted.
%t
Profile Changed:%t%1

Deleted Connection Security Rule:
%tID:%t%t%t%2
%tName:%t%t%t%3

5046

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. A Crypto Set was added.
%t
Profile Changed:%t%1

Added Crypto Set:
%tID:%t%t%t%2
%tName:%t%t%t%3

5047

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. A Crypto Set was modified.
%t
Profile Changed:%t%1

Modified Crypto Set:
%tID:%t%t%t%2
%tName:%t%t%t%3

5048

Microsoft-Windows-Security-Auditing

 A change has been made to IPsec settings. A Crypto Set was deleted.
%t
Profile Changed:%t%1

Deleted Crypto Set:
%tID:%t%t%t%2
%tName:%t%t%t%3

5049

Microsoft-Windows-Security-Auditing

 An IPsec Security Association was deleted.
%t
Profile Changed:%t%1

Deleted SA:
%tID:%t%t%t%2
%tName:%t%t%t%3

Windows Firewall Service

Windows Firewall with Advanced Security