Connecting to PostgreSQL Server

Hello,

I installed a postgresql server on one of the machine in my network with
an example IP 192.168.254.102. I have no problem to connect to the
server from this machine, but when I want to have access to pgsql server
from other pc with an example IP 192.168.254.105 it says that I have no
access to database and it suggests adding this line to pg_hba.conf file:

host all all 192.168.0.0/24 md5

Even when I add it, the error is the same.

My pga_hba file looks like this:
# TYPE DATABASE USER CIDR-ADDRESS METHOD

# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
#host all all ::1/128 md5
host all all 192.168.0.0/24 md5

The beginning of the postgresql.conf:

listen_addresses = '*' # what IP address(es) to listen on;
# comma-separated list of addresses;
# defaults to 'localhost', '*' = all