IPSec Exemptions must be limited.

From Windows 8 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

SV-48171r1_rule IPSec Exemptions must be limited.

Vulnerability discussion

IPSec exemption filters allow specific traffic that may be needed by the system for such things as Kerberos authentication. This setting configures Windows for specific IPSec exemptions.

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Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (NoDefaultExempt) Configure IPSec exemptions for various types of network traffic" to "Multicast, broadcast and ISAKMP exempt (best for Windows XP)".

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