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 | CCI-001090 | 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 | 2025-05-15 | |||
Details
Check Text (C-254469r958524_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".