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WN25-SO-000170 The Windows Server 2025 setting Microsoft network client: Digitally sign communications (if server agrees) must be configured to Enabled.

DISA STIG library V1R4
All changes in this version
first version loaded CAT II

Maps to SC-8, SC-8(1) via CCI-002418, CCI-002421

Title

The Windows Server 2025 setting Microsoft network client: Digitally sign communications (if server agrees) must be configured to Enabled.

Control

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)

Discussion

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

Related controls

CCI-002418, CCI-002421

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".