DNS Server in Oracle Linux.

• Installation service DNS (bind)
  • # yum install bind
• Test the service
  • # service named start
    • (If it is correct you will see the ok from the stopping and another form the starting)

• Open ports for DNS
  •  #iptables –A INPUT –p tcp –dport 53 –j ACCEPT
  • #iptables –A INPUT –p udp –dport 53 –j ACCEPT
• Set Booleans. If you are using Oracle Linux server take this point in consideration.
  • Check before the state.
    • #getsebool –a | grep named
      (You would find off)
  • Set Booleans.
    • #setsebool named_write_master_zones on
      (you will just change named_write_master_zones).

• Edit /etc/named.conf
  • # vi /etc/named.conf
  • (You should make some changes in this file)
    • Add the ip of your machine where it is listening.
    • Add any in allow-query if you want that response to everyone.
      • Other options:
        • Add specific ip
        • Add wildcards ( 192.168.0.0/24)
    • ADD THE ZONE
      • Zone “name of zone” {
        type master;
        file “var/named/name of the file”;
        allow-update { none; };
        };

 

• Create & Edit /var/named/(file of the zone 
• #cd /var/named
• #vi db.va.com (the name of the file that we wrote in /etc/named.conf
  • # add the next parameters.

• Restart the service

The service is ready to use.