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The Windows SMB client must be enabled to perform SMB packet signing when possible.


Overview

Finding ID Version Rule ID IA Controls Severity
V-1166 WN12-SO-000029 SV-52874r2_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.
STIG Date
Windows Server 2012/2012 R2 Member Server Security Technical Implementation Guide 2020-06-16

Details

Check Text ( C-47191r2_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: 1
Fix Text (F-45800r1_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".