1. A method for providing access to a resource requested through a proxy server by a virtualized computing environment, wherein the resource is external to the virtualized computing environment's server system, said method comprising: (a) receiving a request from a client identifying an external resource; (b) transmitting a first request for information corresponding to said external resource; (c) receiving a first response to said first request, said first response comprising state information; (d) transmitting to the client a file comprising a URL, said URL identifying said proxy and said external resource; (e) receiving, from a virtualized computing environment, a request for said URL; (f) transmitting a second request for said external resource, said request comprising said state information; (g) receiving a second response to said second request; and (h) transmitting information corresponding to said second response to said virtualized computing environment.