Can't connect from computer on network.

Hi list,

I am using postgresql 8.2 on Ubuntu Gutsy. I am attempting to connect to my
database on one computer from another computer on my network. I can connect
to the database if I have:

listen_addresses = '*'

in my postgresql.conf file. But I can't connect if I have:

listen_addresses = 'localhost, 192.168.2.102'

in my postgresql.conf file. The computer that is assigned 192.168.2.102 is
the computer I am attempting to connect from that works with the * but not
with an assigned IP address. I understand that having a * allows all
connections but I am attempting to restrict this so only a certain computer
can access the database.

Does anyone know why I can't connect to the database from another computer
when specifying the IP address in 'listen_addresses' and how to fix my
problem?

Thanks a lot for the help.

Dan