Missing BDA hook rules – impact and potential root cause

Some of you may have already heard and know what NLB is and how it works as described in the general Network Load Balancing Overview [http://technet.microsoft.com/en-us/library/cc725946.aspx]. An integral part of a TMG NLB solution is Bi-direction affinity, which is well described at the following link: Bi-Directional Affinity in ISA Server [http://blogs.technet.com/b/isablog/archive/2008/03/12/bi-directional-affinity-in-isa-server.aspx]. Bi-directional affinity creates multiple…