BIND DNS server configuration

BIND DNS server can be install via Webmin
and before you do any configuration to the services you run the following command in shell first

yum install bind-chroot

cause you will get the following error

Download failed : Failed to open /var/named/chroot/var/run/ for writing : Bad file descriptor

After all the configuration of the MASTER zone and SLAVE zone, you need to configure your firewall to accept the DNS request by adding the port 53

iptables -I INPUT -p tcp --dport 53 -j ACCEPT;
iptables -I INPUT -p udp --dport 53 -j ACCEPT;

NOTE: TCP for zone transfer, and UDP for DNS request.

and you need to save the configuration file to take effect

/etc/init.d/iptables save