TCP Listener Problem

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Earl - 27 Jan 2005 19:57 GMT

I have built a TCP client/server application pair that I use to upload data
into an SQL Server DB. The client/server pair communicate properly while
using a local network connection. However, I need to run them over an
internet connection through a firewall. I have mapped the firewall port I am
using to the server computer (windows 2003 machine), but now the TCP listener
will not respond when I attempt to connect to it from a remote location.
Please note that this machine (server) is also running Terminal Server.
Thoughts or solutions are always greatly appreciated.

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Earl - 28 Jan 2005 21:03 GMT

This problem turned out to be a rather interesting problem with the Cisco
firewall box. It would pass one connection, but wouldn't pass a second. The
fix required a flash update to the firewall firmware. It took my network guy
about six hours to talk Cisco out of the update, but once it was installed,
everything worked fine.

Earl

> I have built a TCP client/server application pair that I use to upload data
> into an SQL Server DB. The client/server pair communicate properly while
[quoted text clipped - 4 lines]
> Please note that this machine (server) is also running Terminal Server.
> Thoughts or solutions are always greatly appreciated.

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TCP Listener Problem

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