General Information

Caching-only name servers are non-authoritative. They perform lookups inside or outside the zone and cache the results to use locally.

Install required packages

yum install bind bind-utils

• bind → server package
• bind-utils → client utilities

Make some named configuration changes

vim /etc/named.conf
 
listen-on port 53 { any; };
allow-query { any; };
 
dnssec-validation no;

• listen on any IP
• allow queries from any sources

Check named.conf config syntax

named-checkconf

• No output = no mistakes

Open the firewall for DNS

firewall-cmd --permanent --add-service=dns
firewall-cmd --reload

Start the named service

systemctl enable named
systemctl start named

Test a domain lookup

nslookup google.com 127.0.0.1
 
OR
 
dig @127.0.0.1 google.com