Transparent interception strategies

Content Gateway supports the following transparent interception solutions:

• A Layer 4 switch. See Transparent interception with a Layer 4 switch.
• A router or switch that supports WCCP v2. Cisco IOS-based routers are the most common. See Transparent interception with WCCP v2 devices.
• Policy-based routing. See Transparent interception and multicast mode.
• Software routing. See Transparent interception with software-based routing.

Exactly how client requests reach the proxy depends on network topology. In a complex network, you must decide which clients are to be served transparently and make sure that network devices and the proxy are positioned to intercept their requests. Content Gateway, or routers or switches feeding Content Gateway, are often deployed at a major artery or aggregation pipe to the Internet.

To configure Content Gateway to serve only transparent traffic, see Configuring Content Gateway to serve only transparent requests.