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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 |
|---|---|---|---|---|
| V-220940 | WN10-SO-000215 | SV-220940r569187_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 10 Security Technical Implementation Guide | 2024-02-21 |
Details
| Check Text ( C-22655r555305_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-22644r555306_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). |