NT & Unix firewalls

[Alfredo Botelho <fred () xm com>]

hi,
        I have been asked by my boss to investigate various firewalls in
the market based on NT & Unix. I would appreciate comments of your
experiences on firewalls you have used. Please mail me privately since i
don't want to spam the list. I could collect the results and mail to
interested parties on request.

        thanks,

Alfredo Botelho