Title

The Windows SMB client will be enabled to perform SMB packet signing when possible. (Cat II impact)

Discussion

If this policy is enabled, it causes the Windows Server Message Block (SMB) client to perform SMB packet signing when communicating with an SMB server that is enabled or required to perform SMB packet signing. This policy is defined by default in Local Computer Policy, where it is enabled by default.

Check Content

Fix Text

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”.

Additional Identifiers

Rule ID: SV-32309r1_rule

Vulnerability ID: V-1166

Group Title: SMB Client Packet Signing (if server agrees)

Expert Comments

CCIs tied to check.

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