Transparent interception with software-based routing

You can deploy Content Gateway without adding routers or switches by using routing software on the Content Gateway node. In this case, Content Gateway is a software router and directs all traffic through the proxy machine. This solution can be useful in low-traffic situations, where the performance cost of using the proxy machine as a router is not high.

On Linux systems, you can use the routed and gated daemons as a software-based routing solution.

• The routed daemon is a bundled part of all normal Linux distributions.
• The gated daemon is an extensible commercial software package from the Merit GateD Consortium.

When you use routing software with Content Gateway:

• All Internet traffic goes through Content Gateway from machines behind it in the network.
• The routing software routes all non-transparent requests to the Internet.
• The ARM redirects intercepted requests into proxy requests.
• Web objects to be served transparently are redirected by the ARM on the return path to the client, so that the objects appear to have come from the origin server.