Subject Prevent Windows from using port 3050
Author Reinhard Gunacker

I use Firebird 1.5 on several Windows 2000 servers (some of then running
MSSQL and Exchange).
Today, after restarting a server, i could not connect to the database
via network. I recognized that the process 'system' was using port 3050.
After a second restart the process 'msdtc.exe' used it. These processes
start before firebird so starting the firebird server fails because of
the used port.

I found out, that this processes use dynamic ports which changes on
every reboot. So rebooting a third time resolved the problem.

Does anybody know how to prevent Windows from using port 3050?

Thanks in advance!