Mod proxy is a module used by the Apache server to implement proxying capabilities. It handles all the queries directed to it and forwards only the services that are configured to use iFolder. Mod proxy can be used when an iFolder server is maintained internal to an organization as an application server and is not exposed to the external network. The figure given below illustrates how mod proxy can act as a gateway to the requests directed from the external network by obtaining the required information from the internal iFolder application server.
Figure 12-2 Mod Proxy