Windows Security Log Event ID 852

852: A change has been made to the Windows Firewall port exception list

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• Description of this event
• Field level details
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Windows logs this event when an administrator changes the local policy of the Windows Firewall or a group policy refresh results in a change to the effective Windows Firewall policy - specifically exception rules that allow traffic through.

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Description Fields in 852

• Policy origin: Local Policy or Group Policy
• Profile changed: Stnadard or Domain
• Interface: NICs or "All interfaces"
• Change type: Add/Remove/Modify

New Settings:

• Name: Name of the port
• Port number: Port number
• Protocol: TCP or UDP
• State: Enabled or Disabled
• Scope: custom scope or "All subnets" or "Local subnet"

Old Settings:

• Name: Name of the port
• Port number: Port number
• Protocol: TCP or UDP
• State: Enabled or Disabled
• Scope: custom scope or "All subnets" or "Local subnet"

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