ISA Server 2004 provides secure, fast, and controllable Internet connectivity. ISA Server 2004 provides various ISA Server services, such as Job Scheduler and Firewall, to implement security on the network. ISA Server provides a service called the Web cache solution. The Web cache stores the Web content, which a client requests from the Web server, locally on the ISA Server computer and sends the information to the client. ISA Server provides another complementary service called the organizational firewall solution that prevents unauthorized Internet users from accessing your organizational network.