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Is there such a device that I could plug inline to
check to see if a network (LAN or Wan) is allowing a specific port
through?
My situation is that I'm engaged in a type of alarm
monitoring via the internet and with all the different ISP's, router box's,
networking equipment, etc I'm spending hours trying to make sure that the port I
need is open.
With a device I am envisioning I would
have 2 CAT 5 connections and I would plug inline at any given point in the
network and check to see if the required port is open.
I have been trying to use ethereal to do this but
I'm not getting desired results, having troubles finding a laptop NIC card that
will work in promiscuous mode.
Any help would be greatly appreciated,
Thank you
I apologize in advance if this was not a
appropriate place to post this.
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