By default, a cache redirection virtual server forwards
cacheable requests to the load balancing virtual server for the
cache, and forwards non-cacheable requests to the origin server
(except in a reverse proxy configuration, in which non-cacheable
requests are sent to a load balancing virtual server). There are
three types of cache redirection virtual servers: transparent,
forward proxy, and reverse proxy.
A transparent cache redirection virtual server
uses an IP address of * and a port number, usually 80, that can
accept HTTP traffic sent to any IP address that the NetScaler
represents. As a result, you can configure only one transparent
cache redirection virtual server. Any additional cache redirection
virtual servers that you configure must be forward proxy or reverse
proxy redirection servers.