A customer of ours is using using an application we wrote in Delphi to remotely access data in a Firebird 1.5 database on our linux server. All three Win XP and/or Win 7 machines at the remote location suddenly are not able to connect. We used telnet to make sure port 3050 was open. They did recently upgrade their firewall, however, my knowledge of that is severely limited.

The error messages in the firebird log are:

"INET/inet_error: read errno = 10053" and
"INET/inet_error: receive in try_connect errno = 203"

I saw some traffic on this issue related to simultaneous logins. I would guess that we have less than 4 logins at any one time.

Does anyone know how to resolve this?

Thanks