Two week’s ago Microsoft released the second version of the ISA firewall Best Practices Analyzer (BPA). While the tool really is more of a ISA firewall troubleshooting tool than a best practices tool, I think you’ll find it extremely valuable in checking for misconfiguration errors that lead to common problems with authentication, certificates, publishing and network addressing.
If you haven’t downloaded the new ISA firewall BPA, then check it out at http://www.microsoft.com/downloads/details.aspx?FamilyID=D22EC2B9-4CD3-4BB6-91EC-0829E5F84063&displaylang=en
To find out what’s new and improved in version 2 of the ISA firewall BPA, check out: https://blogs.technet.com/isablog/archive/2006/03/21/IsaBPA_V2.aspx
Thomas W Shinder, M.D.
MVP -- ISA Firewalls