How To Install And Configure DNS Server In Linux

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In this video, we show you how to install and configure DNS server in Linux using Ubuntu 20.04 LTS and Bind • We'll set up a DNS forwarder for Internet DNS resolution, as well as forward and reverse lookup zones for our local network • Useful links: • https://ubuntu.com/download/server • ===================================== • Donate through Paypal: • https://paypal.me/DavidMcKone • Donate through Buy Me A Coffee: • https://buymeacoffee.com/dmckone • Become a monthly contributor on Patreon: • / dmckone • ===================================== • Installation and configuration example: • 1) Install Ubuntu and apply the latest patches • 2) Install and configure Bind9 • sudo apt install -y bind9 bind9utils bind9-doc dnsutils • • 3) Configure DNS Forwarding • cd /etc/bind • backup the existing file, named.conf.options e.g. • sudo cp named.conf.options named.conf.options.bak • edit named.conf.options e.g. • sudo nano named.conf.options • so it looks something like this • • acl trustedclients { • localhost; • localnets; • 172.16.18.0/24; • 172.16.19.0/24; • }; • options { • directory /var/cache/bind ; • recursion yes; • allow-query { trustedclients; }; • allow-query-cache { trustedclients; }; • allow-recursion { trustedclients; }; • forwarders { • 1.1.1.2; • 1.0.0.2; • }; • dnssec-validation no; • listen-on-v6 port 53 { ::1; }; • listen-on port 53 { 127.0.0.1; 172.16.17.10; }; • }; • NOTE: DNSSec disabled as it was found to cause issues for Ubuntu 20.04 • 4) Define zone files • backup the existing file named.conf.local e.g. • sudo cp named.conf.local named.conf.local.bak • edit named.conf.local e.g. • sudo nano named.conf.local • so it looks something like this • • zone templab.lan { • type master; • file /etc/bind/db.templab.lan ; • }; • zone 17.16.172.in-addr.arpa { • type master; • file /etc/bind/db.172.16.17 ; • }; • check the file for errors • sudo named-checkconf • • 5) Create a forward lookup zone • copy an existing file to one with the name used before e.g. • sudo cp db.local db.templab.lan • edit the file e.g. • sudo nano db.templab.lan • so that it looks something like this • • ; • ; BIND data file for templab.lan zone • ; • $TTL 604800 • @ IN SOA ns1.templab.lan. admin.templab.lan. ( • 3 ; Serial • 604800 ; Refresh • 86400 ; Retry • 2419200 ; Expire • 604800 ) ; Negative Cache TTL • ; • @ IN NS ns1.templab.lan. • ns1 IN A 172.16.17.10 • dhcp1 IN A 172.16.17.12 • fw IN A 172.16.18.254 • check the file syntax • sudo named-checkzone templab.lan db.templab.lan • • 6) Create a reverse lookup zone • copy an existing file to one with the name used before e.g. • sudo cp db.127 db.172.16.17 • edit the file e.g. • sudo nano db.172.16.17 • so that it looks something like this • • ; • ; BIND reverse data file for templab.lan zone • ; • $TTL 604800 • @ IN SOA ns1.templab.lan. admin.templab.lan. ( • 2 ; Serial • 604800 ; Refresh • 86400 ; Retry • 2419200 ; Expire • 604800 ) ; Negative Cache TTL • ; • @ IN NS ns1.templab.lan. • 10 IN PTR ns1.templab.lan. • 12 IN PTR dhcp1.templab.lan. • check the file syntax • sudo named-checkzone 17.16.172.in-addr.arpa db.172.16.17 • 7) Edit the server's DNS entry to use it's own DNS server • cd /etc/netplan • edit the yaml configuration file, e.g. • sudo nano 00-installer-config.yaml • change the IP address of the dns server entry and save the file • apply the change • sudo netplan apply • 8) Start and test DNS • start bind9 • sudo systemctl start bind9 • check its status • sudo systemctl status bind9 • • test DNS is working e.g. • host dhcp1.templab.lan • host 172.16.17.10 • ping www.amazon.com • Credits: • LoveLife | Instrumental Prod. Blue Mango | EQMUSEQ.COM by Don Da Vinci • https://soundcloud.com/eqmuseq/loveli... • How To Install And Configure DNS Server In Linux,linux dns configuration step by step,ubuntu dns configuration,ubuntu dns server,install dns ubuntu 20.04,install dns server ubuntu 20.04,how to install dns server in ubuntu,how to install bind9 on ubuntu 20.04,how to install bind9 on ubuntu,bind ubuntu 20.04,bind dns server ubuntu,how to install dns in linux,linux bind dns forwarders,linux bind setup,install bind dns server ubuntu • 00:00 Intro • 00:57 How It Works • 06:31 Build VM • 10:38 Install Ubuntu • 19:55 Install Bind9 • 21:30 Configure Forwarder • 32:00 Configure Zones • 37:48 Configure Forward Zone • 45:07 Configure Reverse Zone • 49:30 Update Netplan • 51:34 Start and Test DNS

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