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ISA Firewall Best Practices, Tips and Tricks (Part 1)

I have been having some intermittent problems. The error message pointed my in the direction of my DNS configuration so I compared my configuration to the Best Practices recommended in this document. Since my configuration was setup during the ISA 2004 install, everything should be standard. I did find two things did not match up.

1. The WAN adapter DNS setting was pointed at the intranet DNS server. I blanked this parameter out in the GUI. This set the DNS configuration to get it automatically from the router.
2. There were no local addresses configured in the Web Browser tab for the internal network. I added the loop back network and the local network addresses.

I also installed the Beta Release of Copylattowebproxy Script. I looked at the script and I think it populates the direct access address ranges in the web browser tab. It appears to do the same thing I just finished doing by hand but I cannot imagine why someone would create a script to do what you can do so easily by hand.

It will probably will take me some time to figure out if these changes made a difference.

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