pg_hba.conf with the "password" auth failed to work sometimes...

Hello all,

i'm using the version 7.0.3 on Redhat 7.1.

i found sometimes when i setup the pg_hba.conf
to restrict to only allow a client from certain
ip to access a database with password auth, but
i found even i give an invalid password, the
client still can connect to this database.

pg_hba.conf
-----------
host mydb 192.168.0.100 255.255.255.0 password user.hba

user.hba
----------
user:

any idea?

---

Wong Ka Ho Matthew
System Engineer
Sky Telemedia Limited
Tel: (852) 2845 8315
Fax: (852) 2845 7890
email: mattheww(at)skytelemedia(dot)com