Windows Server 2019 must not allow anonymous SID/Name translation.

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
highV-205913SRG-OS-000480-GPOS-00227WN19-SO-000210SV-205913r991589_rule2025-02-253
Description
Allowing anonymous SID/Name translation can provide sensitive information for accessing a system. Only authorized users must be able to perform such translations.
ℹ️ Check
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.
✔️ 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".