In response to increasing attacks on servers, Microsoft has updated its security software for the 2 year old ISA servers, Exchange and IIS, on Tuesday by unveiling Feature Pack 1 for Microsoft Internet Security and Acceleration Server 2000 (ISA). Feature Pack1 includes:

Enhanced SMTP filter
Enhanced Exchange remote procedure call (RPC) filter
URLScan 2.5 for ISA Server
Web authentication for RSA SecurID
Delegation for RSA SecurID and basic authentication
Outlook Web Access Wizard
RPC Filter Configuration Wizard
Link Translator
Scenario walk-throughs and troubleshooting documentation

For more information and download: ISAserver/FeaturePack1