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Windows Server 2019 setting Microsoft network client: Digitally sign communications (if server agrees) must be configured to Enabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-205826 WN19-SO-000170 SV-205826r569188_rule Medium
Description
The server message block (SMB) protocol provides the basis for many network operations. If this policy is enabled, the SMB client will request packet signing when communicating with an SMB server that is enabled or required to perform SMB packet signing. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
STIG Date
Microsoft Windows Server 2019 Security Technical Implementation Guide 2022-03-01

Details

Check Text ( C-6091r355840_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\Services\LanmanWorkstation\Parameters\

Value Name: EnableSecuritySignature

Value Type: REG_DWORD
Value: 0x00000001 (1)
Fix Text (F-6091r355841_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network client: Digitally sign communications (if server agrees)" to "Enabled".