Event ID 4961

IPsec dropped an inbound packet that failed a replay check 

IPsec dropped an inbound packet that failed a replay check. If this problem persists, it could indicate a replay attack against this computer.

Remote Network Address: %1
Inbound SA SPI:     %2


Auditing:     Conditional


Volume:     Low



Lookup Audit Policy Configuration Settings

C:\> AuditPol.exe /get /subcategory:"IPsec Driver"
How to enable Windows Auditing
Recommended Audit Policy

Operating Systems:
Windows Vista Windows 2008 Windows 2008 R2 Windows 7 Windows 2012 Windows 2012 R2 Windows 8 Windows 8.1 Windows 10 Windows 2016 Windows 2019 Windows 11 Windows 2022

Audit Category:
System

Audit Subcategory:
IPsec Driver

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