is a stateful
Packet and
Application Layer inspection
Firewall ,
Virtual Private Network and
Web Cache (both
Forward Caching and
Reverse Caching ) server which runs on
Windows 2000 and
Windows Server 2003 . ISA Server 2004 introduces multi-networking support, integrated virtual private networking configuration, extensible user and authentication models, and improved management features. ISA Server 2004 Enterprise Edition includes array support, integrated
Network Load Balancing (NLB), and
Cache Array Routing Protocol (CARP). One of the core capabilities of ISA Server 2004 is its ability to securely publish Web servers. For example, some organizations use ISA Server 2004 to publish their Exchange services (e.g., OWA, RPC over HTTP, ActiveSync, OMA). ISA Server can be used to pre-authenticate clients in the DMZ so that only authenticated traffic reaches the internal servers.
Microsoft Internet Security and Acceleration Server is available in two editions, Standard and Enterprise. Enterprise Edition contains features enabling policies to be configured on an array level, rather than on individual ISA Servers, and load-balancing across multiple ISA Servers. Each edition of ISA Server is licensed per-processor, and requires
Windows Server 2003 Standard or Enterprise Edition server on which to run. Appliance hardware containing Windows 2003 Appliance Edition and ISA Server Standard Edition, are available from third parties including
Celestix ,
Corrent , and
Network Engines .
