This document provides instructions for configuring a BIND DNS server on CentOS 8. It involves installing the BIND packages, enabling the named service to start at reboot, editing the configuration files to listen on all interfaces and define the forward and reverse DNS zones. The forward zone maps hostnames to IP addresses, while the reverse zone maps IP addresses to hostnames. The zone files are then created and validated before restarting the named service.

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Configuration BIND DNS Server on CentOS 8
BIND also known as the “Berkeley Internet Name Domain” is one of the most popular Domain
Name System (DNS) now a day. It an open-source and provides DNS services on Linux operating systems.
Generally, it helps you to resolve a fully qualified domain name into an IP address or IP address to a domain
name. It can be used as an authoritative name server and provides several features like load balancing,
dynamic update, split DNS, etc.
Prerequisites
- A CentOS 8 Server
- Access to the root user account (or access to an admin account with root privileges)
For the purpose of this tutorial, we will use the following setup:
- Hostname: apacheserver.kaantest.com
- IP Address: 10.30.30.5
- Local Network: 10.30.30.0/24
 First, we have to install the BIND packages via “dnf install bind bind-utils –y” command
 We installed the BIND package. Now service is installed but not active.

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 To activate the service after rebooting automatically, use belown command.
“systemctl enable named”
 Now our conf files are under the “/etc” path. By default, the BIND server is listening on localhost
only. So we will need to configure it to listen on all network interfaces. We have to go to
“/etc/named.conf” file
 Now we should configure the forward and reverse DNS Zones. A Forward Zone is used to resolve
the hostname to IP address while a Reverse Zone is used to resolve the IP address to hostname.
Generally, all normal DNS queries are forward lookup queries. We can define the forward and
reverse lookup zones in the /etc/named.conf file.
 Next, we have to create and configure the Forward and Reverse Lookup Zone files. By default, all
zone lookup files are located inside “/var/named” directory. We will use the command;

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Vi /var/named/kaantest.db
Vi /var/named/10.30.30.db for Reverse Lookup

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 After configuring all zone files, we will need to verify the configuration files. First, validate the
main configuration file with the following command:
named-checkconf /etc/named.conf
If everything is fine, we don’t see any error.
 Next, verify the forward zone file with the following command:
named-checkzone kaantest.com /var/named/kaantest.db
We should get the following output:
zone kaantest.com /IN: loaded serial 3
OK
 Next, verify the reverse zone file with the following command:
named-checkzone 30.30.10.in-addr.arpa /var/named/10.30.30.db
We should get the following output:
zone 30.30.10.in-addr.arpa/IN: loaded serial 3
OK
 Finally, restart the BIND service to apply the changes:
“systemctl restart named”
12/24/2021
X
Kaan Aslandag
Signed by: www.kaan1.com