Problem:
When connecting from a V5.x client on a NT machine to a Unix machine 
running InterBase v3.3, got this error"

Database:  pooka:/usr/interbase/examples/atlas.gdb
Statement failed, SQLCODE = -923

connection rejected by remote interface

Solution:
InterBase is not certified for a v5 client to talk to a v3.3 server. 
Here are some possible workarounds:

*  Migrate the v3.3 database to either v4 or v5.

*  If the server is residing on a platform with bridging functionality 
such as HP9 and Solaris, upgrade the InterBase version to v4 so that it 
can utilize the v4-to-v3 bridge on connect.