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Windows Server 2019 setting Microsoft network server: Digitally sign communications (if client agrees) must be configured to Enabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-93561 | WN19-SO-000200 | SV-103647r1_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 negotiate SMB packet signing as requested by the client. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188 |
| STIG | Date |
|---|---|
| Windows Server 2019 Security Technical Implementation Guide | 2019-12-12 |
Details
| Check Text ( C-92877r1_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: EnableSecuritySignature Value Type: REG_DWORD Value: 0x00000001 (1) |
| Fix Text (F-99805r1_fix) |
|---|
| Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network server: Digitally sign communications (if client agrees)" to "Enabled". |