I use a company laptop for work. Usually, I work from a client site. Recently, this client has prohibited the use of its Internet Access from 3rd party. So we switched to a 3G modem + hub as a solution.
However, my company laptop, which runs Windows 7, is configure to automatically download updates. From what I gather, only updates that have been approved by our own company. Either way, I cannot interfere in the process, since it's enforced by a rule.
What I'd like to do is to insert some rule into the 3G's router built-in firewall. Is it possible? Does Windows Update have some main IP that I can block? Or maybe could I block it through a domain name?