Requests for HTML and graphics file run in the Web server process and are returned immediately. Remote Data Services enables client-side data caching in Web applications to reduce server traffic and overhead. Indexing and searching - Index Server 2.0 returns queries almost twice as fast as version 1.0. Create Index Server search pages with Active Server Pages. Use content filters for Microsoft Office 97 and PDF documents.
All Web sites inherit global filters applied on the master property page.
Failover clustering support - Deploy Web and application services in fault tolerant cluster pairs for increased reliability with Windows NT Server Enterprise Edition. Digital certificates -Microsoft Certificate Server issues and manages Internet standard X.509 digital certificates. IIS 4.0 can authenticate users using digital certificates, and map them back to the Windows NT directory by user or groups. Contents of certificate fields are available to ASP applications for personalization. Domain blocking - Grant or deny access to the server based upon IP address or domain name.