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Windows Server 2022 must restrict anonymous access to Named Pipes and Shares.


Overview

Finding ID Version Rule ID IA Controls Severity
V-254469 WN22-SO-000250 SV-254469r958524_rule High
Description
Allowing anonymous access to named pipes or shares provides the potential for unauthorized system access. This setting restricts access to those defined in "Network access: Named Pipes that can be accessed anonymously" and "Network access: Shares that can be accessed anonymously", both of which must be blank under other requirements.
STIG Date
Microsoft Windows Server 2022 Security Technical Implementation Guide 2024-06-14

Details

Check Text ( C-57954r849221_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: RestrictNullSessAccess

Value Type: REG_DWORD
Value: 0x00000001 (1)
Fix Text (F-57905r849222_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Restrict anonymous access to Named Pipes and Shares to "Enabled".