How can you download wow patch when your college has a firewall blocking the download

My advice is to go into your computer and view the control panel. Once there you should see an icon to click on that will lead you to your firewall options. At this menu you should be capable of turning off your firewalls that are currently enabled. Once you have done so then return to the WoW Launcher and when the patch starts to download it should hopefully work. Anyway, maybe the www. ugamegold.com can help you. Firewalls at most colleges are Hardware devices that you cannot bypass from your local machine by such means. WoW uses a P2P protocol that dumb (low grade) firewalls think are normal P2P file sharing so it blocks them (the main complaint with such legitimate uses of P2P software).
There are websites out there that provide the latest WOW patches on a port 80 (HTML) download, so firewalls will not (normally) block the download. The Forums at Blizzard, and the support pages, offer links to these patch downloads; a simple google search will also result the same (if not more) pages.