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.