Windows™ Security Usage Scenarios

The following describes how a user will be allowed to negotiate access to a Plant SCADA runtime system when using Windows groups and roles.

Note: Some scenarios will not be supported if you use a local Windows user to access a Plant SCADA computer. It is recommended that you always use domain Windows user accounts.

When a Windows user logs on to a display client, authentication is performed locally on the Plant SCADA process that is running.

If you are running a standalone system with all processes running locally, you can use a local Windows user to log on.

If the display client connects remotely to one or more Plant SCADA servers that are distributed across multiple domains, a domain user will be required. You also need to make sure that all the Plant SCADA computers are on trusted domains. If the domain controllers are unavailable, you will not be able to log on to the display client.

Auto login (for example, a login that occurs following a restart) will work if the current user meets the criteria described above.

See Also

Integrate Windows™ User Groups