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Audit IPsec Quick Mode

Published: July 3, 2013

Updated: July 3, 2013

Applies To: Windows 7, Windows 8, Windows 8.1, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2



This topic for the IT professional describes the Advanced Security Audit policy setting, Audit IPsec Quick Mode, which determines whether the operating system generates audit events for the results of the Internet Key Exchange (IKE) protocol and Authenticated Internet Protocol (AuthIP) during Quick Mode negotiations.

IKE is an Internet standard, defined in RFC 2409, that defines a mechanism to establish IPsec security associations (SAs). An SA is a combination of a mutually agreeable policy and keys that define the security services and mechanisms that help protect communication between IPsec peers.

AuthIP is an enhanced version of IKE that offers additional flexibility with support for user-based authentication, authentication with multiple credentials, improved authentication method negotiation, and asymmetric authentication. Like IKE, AuthIP supports Main Mode and Quick Mode negotiation.

Quick Mode (also known as Phase 2) IKE negotiation establishes a secure channel between two computers to protect data. Because this phase involves the establishment of security associations (SAs) that are negotiated on behalf of the IPsec service, the SAs that are created during Quick Mode are called the IPsec SAs. During Quick Mode, keying material is refreshed or, if necessary, new keys are generated. A protection suite that protects specified IP traffic is also selected. A protection suite is a defined set of data integrity or data encryption settings. Quick Mode is not considered a complete exchange because it is dependent on a Main Mode exchange.

Event volume: High

Default: Not configured

If this policy setting is configured, the following events appear on computers running the supported versions of the Windows operating system as designated in the Applies To list at the beginning of this topic, in addition to Windows Server 2008 and Windows Vista.

 

Event ID Event message

4977

During Quick Mode negotiation, IPsec received an invalid negotiation packet. If this problem persists, it could indicate a network issue or an attempt to modify or replay this negotiation.

5451

An IPsec Quick Mode security association was established.

5452

An IPsec Quick Mode security association ended.

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