So we're on the page, when I say "site" in this case it means a location to which lots of traffic for many different hosts is routed. (Not "site" as in "websit

So we're on the page, when I say "site" in this case it means a location to which lots of traffic for many different hosts is routed. (Not "site" as in "website".) Typically a University campus, or a company office block, or a datacentre, or your whole distributed org if you hang the networks for your other global offices off VPNs behind one front-end site.