I have tried searching but this topic is not clearly defined. So basically - we want the SCCM Clients to stop connecting to Microsoft Online directly and instead, wait for the updates to be pushed from SCCM via Deployment Packages.
SCCM 2012 SP1
WSUS (installed but not configured)
Windows XP and Windows 7 clients
The SCCM clients (XP and 7) automatically download and install Software Updates from Microsoft online.
These client machines do not have GPO (still on pilot and we're still testing) and they correctly display that the WSUS is the SCCM server.