The service principal name (SPN) target name validation level must be configured to Accept if provided by client.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-21950	WN08-SO-000035	SV-48416r2_rule	ECSC-1	Medium

Description
If a service principle name (SPN) is provided by the client, it is validated against the server's list of SPNs, aiding in the prevention of spoofing.

STIG	Date
Windows 8 / 8.1 Security Technical Implementation Guide	2015-03-09

Details

Check Text ( None )
None

Fix Text (F-41547r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Microsoft network server: Server SPN target name validation level" to "Accept if provided by client".