Microsoft KB Archive/296591

= A description of the automatic discovery feature =

Article ID: 296591

Article Last Modified on 12/4/2007

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APPLIES TO


 * Microsoft Internet Security and Acceleration Server 2004 Standard Edition
 * Microsoft Internet Security and Acceleration Server 2004 Enterprise Edition
 * Microsoft Internet Security and Acceleration Server 2000 Standard Edition

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This article was previously published under Q296591



SUMMARY
This article describes automatic discovery support for Firewall clients and Web Proxy clients in Microsoft Internet Security and Acceleration (ISA) Server 2000 and in Microsoft ISA Server 2004.



MORE INFORMATION
ISA Server uses the Web Proxy Automatic Discovery (WPAD) protocol to automatically discover Web Proxy servers. The WPAD protocol lets clients locate a WPAD entry that contains a URL. This URL points to a server on which Wpad.dat and Wspad.dat files are generated. The Wpad.dat JScript file contains a default URL template that is constructed by Internet Explorer. Web Proxy clients use this script file to obtain information about automatic discovery. The ISA Server WinSock Proxy Autodetect (WSPAD) implementation uses the Wpad.dat file. This implementation creates a Wspad.dat file that provides information about automatic discovery to Firewall clients. For more information, visit the following Microsoft Web page:

http://go.microsoft.com/fwlink/?LinkID=32714

Keywords: kbinfo kbenv kbisa2004yes KB296591

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