Microsoft Internet Security and Acceleration Server 2000

About ISA Server Clients

ISA Server supports three types of clients:

The following table compares the ISA Server clients.

Feature SecureNAT client Firewall client Web proxy client
Installation required Some network configuration changes are required Yes No, requires Web browser configuration
Operating system support Any operating system that supports Transmission Control Protocol/Internet Protocol (TCP/IP) Only Windows platforms All platforms, but by way of Web application
Protocol support Requires application filters for multi-connection protocols All Winsock applications Hypertext Transfer Protocol (HTTP), Secure HTTP (HTTPS), File Transfer Protocol (FTP), and Gopher
User-level authentication Some network configuration changes are required Yes Yes
Server applications No configuration or installation required Requires configuration file N/A

Firewall client computers and SecureNAT client computers may also be Web proxy clients. If the Web application on the computer is configured explicitly to use the ISA Server, then all Web requests (HTTP, FTP, HTTPS, and Gopher) are sent directly to the Web proxy service. All other requests are handled first by the Firewall service.

This section contains the following topics: