Configuration overviews

Configuration overview: nontransparent deployment

When protocol tunneling is deployed in a nontransparent environment, the NetCache protocol tunneling feature is configured to listen on a specific NetCache appliance IP address and port for a particular type of nonstandard traffic. When NetCache receives the nonstandard traffic on this IP address and port, NetCache creates a tunnel to the server IP address and server port identified in the protocol tunneling feature. For this type of deployment, you must provide a mapping of a specific NetCache IP address and port pair to a specific server IP address and port pair.

Configuration overview: transparent deployment

When protocol tunneling is deployed in a transparent environment, the L4 or L7 switch or WCCP router is configured to direct traffic for a nonstandard port to the NetCache appliance. The NetCache protocol tunneling feature is configured to listen for traffic on the nonstandard port and to create a tunnel to the server port identified in the protocol tunneling feature when it accepts the nonstandard traffic on the appliance port. For this type of deployment, you must provide a mapping of a specific NetCache port to a specific server port.

If you are deploying transparency with a WCCP router

In a transparent environment, in addition to configuring the protocol tunneling feature, you must perform the following configuration:

Configure one or more WCCP routers to tunnel the protocols for which you are setting up protocol tunneling through this NetCache appliance.
In the Appliance Manager, configure a WCCP service group for each protocol that you want tunneled through this NetCache appliance.

See Chapter 11, Transparent Proxying, for more information about setting up WCCP service groups.

If you are deploying transparency with an L4 or L7 switch

Configure the switch to send all traffic for a particular nonstandard port to the NetCache appliance.