nmapping intermediate nodes

Steve Glines <[email protected]>
Newsgroups gmane.org.operators.internet-access
Message-ID <[email protected]>
I've run into a strange problem. I have 2 systems that need to
communicate with each other via email. System A has no problem talking
to system B but System B cannot set up a connection with system A. So
far I've sent mail from B to A via C but it's a major annoyance. I'd
like to use B as an alternative MX for A but as long as they can't talk
directly it's a pain.

Here's the thing:
I can do an nmap of B from A in about 5 seconds - perfect results.
nmap from B to A just hangs. I can ssh between the two however.

So my question is how can I find out who along the route is blocking me?

Thanks in advance
-- 
Steve Glines
voice: 978-633-3460         www.is-cs.com
  fax: 270-638-1404         145 Foster Street
 cell: 617-549-7274         Littleton MA 01460

I'm a complex person. I have a real and an imaginary part.
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