Anyway, why to you prefer an active mode?
thx for the link.
I am connecting a farm of 10+ Servers round robin to a 1000+ wending machines from different companies, sitting behind different firewalls and all using the same public IP ranges – of course ...
NATing that is already a BIG pain and PASV would add a lot of configuration on systems out of my control.
So setting up sessions for all these machines, on all the servers on the Farm would not be very efficient, because there are always some of the wending machines in repair, or getting a new module resulting in a new fingerprint.
Not to mention adding new machines ...
I would be updating those sessions all day long ...
Now I am using a central database with all needed information – easily updated ;) but that requires scripting (VB.NET) to connect.