WN25-SO-000210 Windows Server 2025 must not allow anonymous SID/Name translation.
All changes in this version
Maps to CM-6 via CCI-000366
Title
Windows Server 2025 must not allow anonymous SID/Name translation.
Control
Verify the effective setting in Local Group Policy Editor. Run gpedit.msc. Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options. If the value for "Network access: Allow anonymous SID/Name translation" is not set to "Disabled", this is a finding.
Discussion
Allowing anonymous SID/Name translation can provide sensitive information for accessing a system. Only authorized users must be able to perform such translations.
Related controls
CCI-000366
Fix
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Allow anonymous SID/Name translation to "Disabled".