Procedure:

1. Log in to the SMS from a client.
2. On the SMS toolbar, navigate to the Admin > Server Properties tab.
3. Select the Network tab.
4. In the TMC Proxy area enter the required information:
   • Proxy TMC Connections (check to enable)
     • Proxy Server Host
     • Proxy Server Port
   • Use Proxy Authentication (check to enable)
     • Username
     • Password
5. Click Apply.

Reference: SMS User Guide