Postgresql connection on suse 10

hello,

I installed PostgreSQL 8.0.3 on Suse 10 (x86_64).

Firewall is down.

telnet localhost 5432 result:

xxxxx:/var # telnet localhost 5432
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.

but telnet ip_address 5432 result:

xxxxx: # telnet 158.195.xx.xx 5432
Trying 158.195.xx.xx...
telnet: connect to address 158.195.xx.xx: Connection refused

Why I cannot connect to ip address??????
I tried to add line to pg_hba.conf, then restart, but no change...

thanks, miso