Problem with pg_hba.conf

In the pg_hba.conf file, I have the following entry:

host db1 client1 192.168.150.234/32 md5

Now the problem is:
The client having IP 192.168.150.234 is trying to
use phpPgAdmin, but is unable to connect.

The corresponding config.inc.php has this entry:
$conf['servers'][0]['desc'] = 'PostgreSQL';
$conf['servers'][0]['host'] = '192.168.150.234';
$conf['servers'][0]['port'] = 5432;
$conf['servers'][0]['defaultdb'] = 'db';

----------------------------------------------------

If the entry is:
host db1 client1 192.168.150.234/0 md5

Then, any client (client with any IP address) can log
in as no MASK specified.

Thank you
celerity12

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