The problem is with your connection string:
Remove PORT=3053 from the connection string (this causes the "Invalid connection string attribute" message)
Modify DBNAME=192.168.1.47:CWNPFB to DBNAME=192.168.1.47/3053:CWNPFB
(to specify the right port)
You might also want to comment out (or remove) the line RemoteServiceName = gds_db, because you are now instructing Firebird to listen on
gds_db (== port 3050), and on port 3053
. I believe it usually listens on the last one configured in the config file, but I'm not sure that is always the case.
courtesy : Mark Rotteveel