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Windows Server 2022 setting Microsoft network server: Digitally sign communications (always) must be configured to Enabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-254463 WN22-SO-000190 SV-254463r849205_rule Medium
Description
The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB server will only communicate with an SMB client that performs SMB packet signing. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
STIG Date
Microsoft Windows Server 2022 Security Technical Implementation Guide 2022-08-25

Details

Check Text ( C-57948r849203_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\LanManServer\Parameters\

Value Name: RequireSecuritySignature

Value Type: REG_DWORD
Value: 0x00000001 (1)
Fix Text (F-57899r849204_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Microsoft network server: Digitally sign communications (always) to "Enabled".