A quick Google search came up with:
http://office.microsoft.com/en-us/as...401641033.aspx
"Paul Lawlor" wrote:
> Hey All! I need to allow a small group of servers access to the windows
> update site(s) to get there updates. I am trying to define a firewall rule to
> allow access to only the windows update site from these servers. I can
> stipulate that they can only access windowsupdate.microsoft.com, but there
> are other sites/pages called by this site/page. Does anyone have a complete
> list of all the sites/subdomains/anything relative to allow this type of
> lockdown?