A couple of weeks ago I did a series on the TMG firewall’s ISP Redundancy feature. If you missed them, check out
http://www.isaserver.org/tutorials/Kicking-Tires-TMG-2010-RC-ISP-Redundancy-Part1.html
http://www.isaserver.org/tutorials/Kicking-Tires-TMG-2010-RC-ISP-Redundancy-Part2.html
One thing you’ll find missing from that article is a detailed account of how to control the mechanisms that determine that the link to the Internet is down for a particular connection and how to control the mechanisms related determining when a particular link is up. The reason why was because it required a bit of programming chops that aren’t in my repertoire.
However, Philipp Sand steps up to the plate and provides some programming examples that you can use to control the ISP Redundancy dead link detection feature’s behavior.
Check it out over at:
http://blogs.technet.com/isablog/archive/2009/11/26/tmg-isp-redundancy-unleashed.aspx
HTH,
Tom
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer
Prowess Consulting www.prowessconsulting.com
PROWESS CONSULTING | Microsoft Forefront Security Specialist
Email: [email protected]
MVP — Forefront Edge Security (ISA/TMG/IAG)