Network Access: Microsoft network Server: Digitally sign communications (if client agrees) must be configured to Enabled

189e99fb-1c5c-43ed-b044-4dcbccf3820f

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

Remediation

To fix this 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".

STIG
Server
2022: https://stigviewer.com/stigs/microsoft_windows_server_2022/2025-01-14/finding/V-254464
2019: https://stigviewer.com/stigs/microsoft_windows_server_2019/2022-03-01/finding/V-205828

NIST 800-53: SC-12(2),SC-12(3),SC-13
NIST 800-171 Rev2: 3.13.11
NIST 800-171A: 3.8.6, 3.13.11
CMMC v2.0 Mapping v1.02: SC.3.177
CMMC V2.0 Level 2: SC.L2-3.13.11
CMMC v2.0 Level 3: SC.L2-3.13.11, TBD - 3.14.1e
CSA CMM v4: CEK-01, CEK-02, CEK-03, CEK-04, DSP-10, LOG-10, LOG-11
PCI DSS 3.2: 2.2.3, 4.1
PCI DSS 4.0: 3.3.2, 8.3.2, 12.3.3
SIG: D.7.5.1
STIG: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188