Ensure 'Hide Instance' option is set to 'Yes' for Production SQL Server instances

低レベル 1自動mssql

説明

Non-clustered SQL Server instances within production environments should be designated as hidden to prevent advertisement by the SQL Server Browser service. Applies to production instances; reads HideInstance through xp_instance_regread (1 = hidden). Default: By default, this option is disabled (0). Runs one sqlcmd query with its defaults (Windows authentication to the local default instance); set SQLCMDSERVER, SQLCMDUSER and SQLCMDPASSWORD for another instance or SQL authentication. Needs VIEW SERVER STATE / sysadmin-level read access.

チェック方法

監査方法: SQL クエリ

sql_query

sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; DECLARE @v int; EXEC master.sys.xp_instance_regread @rootkey = N'HKEY_LOCAL_MACHINE', @key = N'SOFTWARE\Microsoft\Microsoft SQL Server\MSSQLServer\SuperSocketNetLib', @value_name = N'HideInstance', @value = @v OUTPUT; SELECT ISNULL(@v, 0);"

期待される出力: 1

修正方法

修正方法: ガイダンスまたは IaC パッチ

Perform either the GUI or T-SQL method shown: GUI Method 1. In SQL Server Configuration Manager, expand SQL Server Network Configuration, right-click Protocols for <InstanceName>, and then select Properties. 2. On the Flags tab, in the Hide Instance box, select Yes, and then click OK to close the dialog box. The change takes effect immediately for new connections. T-SQL Method Execute the following T-SQL to remediate: EXEC master.sys.xp_instance_regwrite @rootkey = N'HKEY_LOCAL_MACHINE', @key = N'SOFTWARE\Microsoft\Microsoft SQL Server\MSSQLServer\SuperSocketNetLib', @value_name = N'HideInstance', @type = N'REG_DWORD', @value = 1;

プロパティ

オペレーティングシステム: すべて
タグ: mssqldatabasenetwork
参照: CIS Microsoft SQL Server 2025 Benchmark v1.0.0 - 2.12 Ensure 'Hide Instance' option is set to 'Yes' for Production SQL Server instances

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target mssql