> Ping: 'TCP/IP Communication Test Passed!'
> 21: 'TCP/IP Communication Test Passed!'
> FTP 'TCP/IP Communication Test Passed!'
> 3050: 'TCP/IP Communication Test Failed!'

These are all on the same server? So your client is able to ping the
server and do FTP on it? Do you reach the server by name or by IP
address?

Next you should probably check the settings in firebird.conf related
to the port number and service name setting.

You could try to give the port number in the database connection
string, like servername/3050:database

Regards

Stefan