Inorder to access the pgsql database remotely, you need to make following changes in the server.
1) Open the Port 5432 in the server.
iptables -A INPUT -p tcp –dport 5432 -j ACCEPT
service iptables restart
2) Edit the Pgsql configuration file (postgresql.conf).
vi /var/lib/pgsql/data/postgresql.conf
Make the following changes
tcpip_socket = true
port = 5432
3) Edit PostgreSQL HOST ACCESS CONTROL FILE (pg_hba.conf)
This file controls what hosts are allowed to connect to what databases and specifies some options on how users on a particular host are identified. It is read each time a host tries to make a connection to a database.
vi /var/lib/pgsql/data/pg_hba.conf
Add the machine IP address from which database is accessing remotely.
# TYPE DATABASE IP_ADDRESS MASK AUTH_TYPE
AUTH_ARGUMENT
local all trust
host all 127.0.0.1 255.255.255.255 trust
host all 61.246.232.245 255.255.255.255 trust
Second line allows any user on the local system to connect to any # database under any username.
Here the IP address 61.246.232.245 has been added, to allow users from 61.246.232.245 host to connect to any database.
Thats all 
If the same connection is needed with SSL, please add the following in /var/lib/pgsql/data/pg_hba.conf .
hostssl all all 189.71.10.99 255.255.255.255 trust
host all all 189.71.10.99 255.255.255.255 trust
