SQL Server 6.5 Security Modes

SQL Server 6.5 uses three security modes:

  • Standard

  • Integrated

  • Mixed
  • The security mode is selected during SQL Server 6.5 installation and can
    be modified at any time.
    To change the security modes, you can do the following:

    Click Start, Programs, Microsoft SQL Server 6.5 and click
    SQL Enterprise Manager to run SQL Enterprise Manager from the
    Microsoft SQL Server 6.5 program group.

    Select the server you want to work with, then from the Server menu
    select SQL Server, Configure and choose the Security Options page.

    Set SQL Server 6.5 Security Mode

    Standard Security

    This security mode is used by default. In this case, SQL Server manages
    its own login validation process for all connections, i.e. SQL Server
    is wholly responsible for authenticating a user and for enforcing
    password and login restrictions.

    Integrated Security

    When it is used, then Windows NT is responsible for managing user
    connections through its Access Control List (ACL). So the advantage
    of using Windows NT Integrated Security mode is single-password
    access to all resources on a Windows NT domain and password aging
    and encryption across the network.

    With Integrated Security, only Multi-Protocol and Named Pipes clients
    are supported, and only trusted connections are allowed into SQL Server
    (trusted connections are only available via the Multi-Protocol or via
    Named Pipes).

    Mixed Security

    Mixed Security is a combination of the standard and integrated security.
    In this case, when a user connects to a SQL Server, then SQL Server
    checks is it a trusted connection or not (checks is the login name
    matches the user’s network username, or if the login name is null).
    If it is a trusted connection, then SQL Server uses Windows NT
    authentication, if it is not a trusted connection then SQL Server
    uses Standard Security (i.e. tried to find the same SQL Server login
    name and password, as user has passed).

    This security mode is usually used when there are many different clients
    connected to SQL Server, and one of them use trusted connections and
    other use standard security (SQL Server login and password).


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    Alexander Chigrik

    Alexander Chigrik
    Alexander Chigrik
    I am the owner of MSSQLCity.Com - a site dedicated to providing useful information for IT professionals using Microsoft SQL Server. This site contains SQL Server Articles, FAQs, Scripts, Tips and Test Exams.

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