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From "Nelson, Tracy" <>
Subject RE: Tomcat listening on port but not responding to requests
Date Fri, 01 Dec 2006 20:22:00 GMT
| From: Joel Klein []
| Sent: Friday, 01 December, 2006 11:19
| The odd thing that needs an explanation, if a firewall is responsible,
| is that these machines were working fine.

Has anyone installed any OS patches or fixes on these machines?  Windows
XP will helpfully install "critical" (in MS's eyes) patches for you if
you let it, presumably servers wouldn't be set up this way.

Can you write a simple app that creates a ServerSocket and just logs
requests and set that up on one of the servers?[1]  If you can get
through to it (you might want to have it return a static HTML page or
something just so you can verify bidirectional communication), then that
will rule out a network/firewall issue.  And if you *can't* get through
to it, then you have a nice simple test server to instrument, rather
than something as complex as Tomcat.

[1] Look, there's one now:

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