Windows Server 2019 must be configured to ignore NetBIOS name release requests except from WINS servers.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-205819 | WN19-CC-000060 | SV-205819r958902_rule | CCI-002385 | low |
| Description | ||||
| Configuring the system to ignore name release requests, except from WINS servers, prevents a denial of service (DoS) attack. The DoS consists of sending a NetBIOS name release request to the server for each entry in the server's cache, causing a response delay in the normal operation of the server's WINS resolution capability. | ||||
| STIG | Date | |||
| Microsoft Windows Server 2019 Security Technical Implementation Guide | 2025-05-23 | |||
Details
Check Text (C-205819r958902_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\Netbt\Parameters\
Value Name: NoNameReleaseOnDemand
Value Type: REG_DWORD
Value: 0x00000001 (1)
Fix Text (F-6084r355820_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> "MSS: (NoNameReleaseOnDemand) Allow the computer to ignore NetBIOS name release requests except from WINS servers" to "Enabled".
This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and "MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.