By: Chad Boyd | Comments | Related: > Security
I had a customer inquire as to how to verify service-related permissions for the Sql Server service account...i.e., Books Online indicates the Sql Server service account requires permission to start the following related services (amoung many other requirements): Sql Server Active Directory Helper and Sql Writer services. Obviously, the service really wouldn't NEED permissions to do so if you weren't going to make use of said services, but let's assume for the moment that we are going to do so, and that you want to determine first of all if the Sql Server service account has these permissions and/or what permissions the account has to services on the machine in question.
There's a tool called "AccessChk" which will allow you to see this type of information, along with lots of other access-related information for given accounts. You can find information on the tool at the following link:
http://www.microsoft.com/technet/sysinternals/utilities/AccessChk.mspx
As an example, the following command line will give you effective permissions to all services on the local machine for an account named "LTCBOYDMS\sqlService":
accesschk "LTCBOYDMS\sqlService" -vc *
To determine service-related permissions, the -c option must be used. Without it, you get by default ACL information for files/folders/shares and other information (which is handy also). If you specify the wildcard character (the *), you'll get permission related information for the given account against ALL services on the machine...if you're looking for only a specific service information, you can replace the wildcard with the appropriate service name. For example, to get effective permissions to only the SQLWriter service (the service name for the Sql Writer service), you could use the following command:
accesschk "LTCBOYDMS\sqlService" -vc "SQLWriter"
and, for the Active Directory Helper service, something like the following:
accesschk "LTCBOYDMS\sqlService" -vc "MSSQLServerADHelper"
Output from the command should look similar to the following:
C:\Projects\Toolbox\accessCheck>accesschk.exe "DUMMYDOMAIN\svcSqlService" -vc *
AccessChk v2.0 - Check account access of files, registry keys or services
Copyright (C) 2006 Mark Russinovich
Sysinternals - www.sysinternals.com
RW Alerter
SERVICE_ALL_ACCESS
RW ALG
SERVICE_ALL_ACCESS
RW MSSQL$SQL2000
SERVICE_ALL_ACCESS
RW MSSQL$SQL2005
SERVICE_ALL_ACCESS
RW MSSQL$SQL2005B
SERVICE_ALL_ACCESS
RW MSSQL$SQLEXPRESS
SERVICE_ALL_ACCESS
RW MSSQLServerADHelper
SERVICE_ALL_ACCESS
...
R Pml Driver HPZ12
SERVICE_QUERY_STATUS
SERVICE_QUERY_CONFIG
SERVICE_INTERROGATE
SERVICE_ENUMERATE_DEPENDENTS
SERVICE_PAUSE_CONTINUE
SERVICE_START
SERVICE_STOP
SERVICE_USER_DEFINED_CONTROL
READ_CONTROL
...
RW SQLBrowser
SERVICE_ALL_ACCESS
RW SQLWriter
SERVICE_ALL_ACCESS
...
C:\Projects\Toolbox\accessCheck>
In the output, the "RW" designators at the beginning of each line indicate Read/Write privs (if present), then the service name, then using the -v option will provide you the additional output shown below each service above. The SERVICE_ALL_ACCESS implies all access, if you don't have that, you should see individual service related privs like in the line above for the "Pml Driver HPZ12" service.
About the author
Chad Boyd is an Architect, Administrator and Developer with technologies such as SQL Server, .NET, and Windows Server.This author pledges the content of this article is based on professional experience and not AI generated.
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