What are “unmanaged endpoints’ which make the Blue Coat RA (Remote Access) appliance
useful?

A.
TCP connection sources or destinations, which are outside our LAN

B.
Workstations, which need to be in a virtual private network, but VPN clients cannot beinstalled
on them

C.
Mobile user laptops, which are used in places not protected by ProxySG

D.
Hosts without installed ProxyClient or with disabled ProxyClient

Explanation:
http://www.onixnet.com/bluecoat/BlueCoat_ProxyRA_510.htm(second paragraph)