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The setting Microsoft network client: Digitally sign communications (always) must be configured to Enabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-225039 | WN16-SO-000190 | SV-225039r569186_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 client will only communicate with an SMB server that performs SMB packet signing. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188 |
| STIG | Date |
|---|---|
| Microsoft Windows Server 2016 Security Technical Implementation Guide | 2021-09-29 |
Details
| Check Text ( C-26730r466019_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: RequireSecuritySignature Value Type: REG_DWORD Value: 0x00000001 (1) |
| Fix Text (F-26718r466020_fix) |
|---|
| Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network client: Digitally sign communications (always)" to "Enabled". |