Available: SharePoint Portal Server 2003 Document - Deploying on an Extranet by Using ISA Server 2000 and ISA Server 2004
This white paper explains the deployment of Microsoft® Office SharePoint® Portal Server 2003 across an extranet. It discusses how to configure a SharePoint Portal Server deployment so that users outside an external corporate firewall/proxy server can access information on a portal site that is inside an external corporate firewall/proxy server. It specifically explains the use of Microsoft Internet Security and Acceleration (ISA) Server 2000 and ISA Server 2004 in what is generally considered to be a reverse proxy configuration.
For more information, please go to: https://www.microsoft.com/downloads/details.aspx?FamilyId=4C5BF9DD-3EFB-451D-B213-98ED039190BF&displaylang=en