Microsoft Internet Security and Acceleration (ISA) Server 2000 provides firewall and caching features that organizations can use to secure their networks and improve network performance.
Using ISA Server 2000, organizations can implement security policies by configuring rules that specify which sites, protocols, and content can pass through the computer running ISA Server 2000. By monitoring requests and responses between the Internet and internal clients, ISA Server 2000 controls who can access specific computers on a corporate network. ISA Server 2000 also controls which computers on the Internet internal clients can access. The ISA computer or array of computers are located at the edge of the organization's network, which means they are well positioned to increase performance by caching data, whether this data is flowing from the Internet into the network or from the network to external clients.
The following points summarize the functionality of ISA Server 2000:
The following illustration shows where ISA Server 2000 resides in a typical enterprise network.
Internet Security and Accelerating Server 2000