I installed a Windows client of a SQL Manager for PostgreSQL on my XP.

I'm trying to configure an access to the DataSync database but connection refused. I tried telnet to the IP address of my server, port 5432, not working.

From the linux server, in a Terminal session,
I can Telnet localhost 5432
but doing Telnet 5432 ... not working.
Getting connection refused.

Here's the Engine Configuration on my Novell Data Synchronizer:

Engine Settings:
IP Address:

Database Settings:
Host: localhost
Port: 5432
Type: PostgreSQL
Database: datasync
Username: datasync_user

Do I need to change my Novell Data Sync settings or it's more at the Linux box that I have to allow or enable something ?