{TAIL ~ Embodiments} of the invention provide a functional architecture having a control unit inside {HEAD ~ the firewall}, and a proxy server outside the firewall 
{ TAIL ~ Embodiments } of the invention provide a functional architecture having a control unit inside { HEAD ~ the firewall } , and a proxy server outside the firewall
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH