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Chapter 4. How Do I? 31

The I/O Server re-registers every time you double-click the I/O Server icon or use a

shortcut to open it from the desktop or the Windows Start menu. By re-registering,

you reset the server’s registry settings. When the I/O Server starts automatically from

a client application, the registry settings do not change.

If you start the I/O Server independently by selecting its icon or shortcut while the

server is already running, you overwrite the current custom security settings.

Example

The following procedures describe how to configure your system for the following conditions:

• Only administrators of the I/O Server host computer can access the server.

• Only the user that is logged on to the computer where the I/O Server resides can launch

the Server.

Use these procedures as a guide to implement security for your needs.

To allow only Administrators access to the I/O Server

[1] Start DCOMCNFG.EXE and double-click the SI7Drv I/O Server from the list in the

Applications tab.

[2] Click the Security tab to display the three modes of DCOM security.

[3] Select the Use Custom Access Permissions option, and click the Edit button for access

permissions.

[4] If Administrators and SYSTEM appears in the list on the Registry Value Permissions

dialog box, proceed to step 8.

If Administrators or SYSTEM is not in the list, click Add.

[5] Select the local computer name in the List Names From field.

[6] Double-click Administrators and SYSTEM in the Names list box to add it to the Add

Names list at the bottom of the dialog box.

[7] Click OK to accept the selection and close the dialog box.

[8] Select Administrators from the Name list box and Allow Access from the Type of Access

field. Repeat this step for SYSTEM. For the other entries in the Name list, select Deny

Access from the Type of Access field.

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