I am thinking that using the full URL wouldn’t be a good idea as McAfee might change some small thing and access would be disallowed whereas as long as download.mcafee.com is allowed the update will get through.
Well, kinda. This is a hotspot running on an extremely bandwidth-restricted connection (satellite) and the full site has hideous things like video tutorials and the “Virtual Technician”. I just want to allow folks to be able to update their virus defs. Right now, McAfee tries to do that as soon as they turn on their PC and are assigned an IP, but before they log into the Hotspot. This fails and they get all kinds of ugly messages about “Computer at Risk!!”. If they do a manual update after logging in, it works OK.