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The system must be configured to meet the minimum session security requirement for NTLM SSP-based clients.


Overview

Finding ID Version Rule ID IA Controls Severity
WN12-SO-000069 WN12-SO-000069 WN12-SO-000069_rule Medium
Description
Microsoft has implemented a variety of security support providers for use with RPC sessions. All of the options must be enabled to ensure the maximum security level.
STIG Date
Microsoft Windows Server 2012 Member Server Security Technical Implementation Guide 2013-07-25

Details

Check Text ( C-WN12-SO-000069_chk )
If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \System\CurrentControlSet\Control\Lsa\MSV1_0\

Value Name: NTLMMinClientSec

Value Type: REG_DWORD
Value: 0x20080000 (537395200)
Fix Text (F-WN12-SO-000069_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network security: Minimum session security for NTLM SSP based (including secure RPC) clients" to "Require NTLMv2 session security" and "Require 128-bit encryption" (all options selected).