Steps to Configure RPC Proxy on Windows 2000 Server
Note When you upgrade from a Windows NT 4.0 SP4 Server (in which CIS is already installed) to Windows 2000, you must use the following steps to reinstall CIS.
On a Windows 2000 Server, CIS is installed from an optional network setup and is not installed by default. You can install CIS during the initial Windows 2000 server installation or add it later to an existing system as follows:
In Control Panel, click Add/Remove Programs, and then click Add/Remove Windows Components.
In the Windows Components Wizard, select the Networking Services check box, and then click Details.
Select the COM Internet Services Proxy check box, and then click OK to exit the Windows Components Wizard.
To enable CIS on the Windows NT 4.0 or Windows 2000 server, you must add the Tunneling TCP protocol to the DCOM protocol list. In addition, you can change the value of a DCOM property to control whether CIS is enabled (by default, it is "disabled"). This setting can act as a coarse-grained security control to disable potential Internet access to DCOM. Note, however, that even when CIS is enabled, the usual DCOM security checks remain in effect.
To add the Tunneling TCP protocol to the DCOM protocol list and to change the value of the DCOM property, run DCOMCNFG as follows:
On the Start menu, click Run, and type DCOMCNFG.
On the Default Properties tab, select the Enable COM Internet Services on this computer check box.
On the Default Protocols tab, click Add.
In the resultant dialog box, click Tunneling TCP/IP, and then click OK.
Click OK to close DCOMCNFG.
Restart the system so that the changes take effect.
For more information about CIS and for an overview of Tunneling TCP Protocol, refer to the following Microsoft white paper: