TMA-MSSQL-2.7
Ensure 'Remote Admin Connections' Server Configuration Option is set to '0'
MediumLevel 1Automatedmssql
Description
The remote admin connections option controls whether a client application on a remote computer can use the Dedicated Administrator Connection (DAC). Clustered instances are not applicable and are reported compliant. Default: By default, this option is disabled (0), only local connections may use the DAC. 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.
How it is checked
Audit method: SQL query
sql_query
sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; SELECT CASE WHEN CAST(SERVERPROPERTY('IsClustered') AS int) = 1 THEN 'compliant' WHEN EXISTS (SELECT 1 FROM sys.configurations WHERE name = 'remote admin connections' AND CAST(value AS int) = 0 AND CAST(value_in_use AS int) = 0) THEN 'compliant' ELSE 'noncompliant' END;"- Expected output
compliant
How it is fixed
Fix method: SQL statement
shell
sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; EXEC sp_configure 'remote admin connections', 0; RECONFIGURE;"Properties
- Operating systems
- Any
- Tags
- mssqldatabasesurface-areadac
- Reference
- CIS Microsoft SQL Server 2025 Benchmark v1.0.0 - 2.7 Ensure 'Remote Admin Connections' Server Configuration Option is set to '0'
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
shell
tmaegis scan --target mssql