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Windows Server 2019 must not allow anonymous enumeration of shares.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-205724 | WN19-SO-000230 | SV-205724r958524_rule | High |
| Description |
|---|
| Allowing anonymous logon users (null session connections) to list all account names and enumerate all shared resources can provide a map of potential points to attack the system. |
| STIG | Date |
|---|---|
| Microsoft Windows Server 2019 Security Technical Implementation Guide | 2024-06-14 |
Details
| Check Text ( C-5989r355090_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\Control\Lsa\ Value Name: RestrictAnonymous Value Type: REG_DWORD Value: 0x00000001 (1) |
| Fix Text (F-5989r355091_fix) |
|---|
| Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Do not allow anonymous enumeration of SAM accounts and shares" to "Enabled". |