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PKU2U authentication using online identities will be prevented.


Overview

Finding ID Version Rule ID IA Controls Severity
V-21953 3.153 SV-32447r1_rule Medium
Description
This setting prevents online identities from being used by PKU2U, which is a peer-to-peer authentication protocol. Authentication will be centrally managed with Windows user accounts.
STIG Date
Windows Server 2008 R2 Member Server Security Technical Implementation Guide 2019-06-18

Details

Check Text ( C-32913r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in.
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies -> Security Options.

If the value for “Network Security: Allow PKU2U authentication requests to this computer to use online identities” is not set to “Disabled”, then this is a finding.

The policy referenced configures the following registry value:

Registry Hive: HKEY_LOCAL_MACHINE
Subkey: \System\CurrentControlSet\Control\LSA\pku2u\

Value Name: AllowOnlineID

Type: REG_DWORD
Value: 0
Fix Text (F-28858r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “Network Security: Allow PKU2U authentication requests to this computer to use online identities” to “Disabled”.