How To Install DNS Server (Bind9) On Ubuntu 18.04
DNS refers to Domain Name System. It is very import for your local network and public network. So I want to show step by step guide for DNS server how to install and configure DNS (Bind9) on local network.
System requirements :
- Ubuntu 18.04 VPS or local machine
- RAM 1 GB (More best performance)
- LAN interface
- SSH enable
★ How To Install DNS (Bind9) On Ubuntu 16.04
★ How To Install DNS (Bind9) On Ubuntu 14.04
My Server IP Address : 10.66.40.50
Name server : ns1.technologyrss.local
Step #01: Must be server update complete using below command
[email protected]:~# apt update && apt upgrade -y
Change server host name like as below. Open hosts file via any editor.
[email protected]:~# vi /etc/hosts
127.0.0.1 localhost 10.66.40.50 ns1.technologyrss.local ns1
then save it Esc :wq press Enter.
And then change another file open using below command
[email protected]:~# vi /etc/hostname
ns1
then save it Esc :wq press Enter.
Now reboot your server using command
[email protected]:~# reboot
Step #02: Edit resolv.conf file and add google dns and my ip address as name server.
[email protected]:~# vi /etc/resolv.conf
nameserver 10.66.40.50 nameserver 8.8.8.8
then save it Esc :wq press Enter.
Now Install DNS (Bind9) server using command below
[email protected]:~# apt-get install bind9 bind9utils bind9-doc -y
Step #03: Wait up to installation is completed then goto bind folder
[email protected]:~# cd /etc/bind/
Now backup or copy default named.conf.local file.
[email protected]:/etc/bind# cp named.conf.local named.conf.local.back
db.local file is zone file that means forward and reverse zone. So I copy (db.local) file for two purposes.
This one forward zone file.
[email protected]:/etc/bind# cp db.local db.fwd.technologyrss.local
Another one reverse zone file.
[email protected]:/etc/bind# cp db.local cp db.local db.rev.technologyrss.local
Now create zones folder using command
[email protected]:/etc/bind# mkdir /etc/bind/zones
Move created two file into /etc/bind/zones folder.
[email protected]:/etc/bind# mv db.fwd.technologyrss.local zones [email protected]:/etc/bind# mv db.rev.technologyrss.local zones
Step #04: Now edit named.conf.local file then insert forward and reverse file location.
[email protected]:/etc/bind# vi named.conf.local
Insert below text after default text then save it.
zone "technologyrss.local" IN {
type master;
file "/etc/bind/zones/db.fwd.technologyrss.local";
allow-update { none; }; // Since this is the primary DNS, it should be none.
};
//Reverse lookup name, should match your network in reverse order
zone "66.10.in-addr.arpa" IN {
type master;
file "/etc/bind/zones/db.rev.technologyrss.local";
allow-update { none; }; //Since this is the primary DNS, it should be none.
};
then save it Esc :wq press Enter.
Note : Server IP 10.66.40.50 so This first two 66.10.
Step #05: Open named.conf.options file for add acl and listen information.
[email protected]:/etc/bind# vi named.conf.options
Insert all information into named.conf.options file then save it.
acl "Trusted" {
10.66.40.50; # Name Server
};
options {
directory "/var/cache/bind";
recursion yes; # enables resursive queries
allow-recursion { Trusted; }; # allows recursive queries from "trusted" clients
listen-on { 10.66.40.50; }; # ns1 private IP address - listen on private network only
allow-transfer { none; }; # disable zone transfers by default
forwarders {
8.8.8.8;
8.8.4.4;
};
dnssec-validation auto;
auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
};
then save it Esc :wq press Enter.
Step #06: And now edit two file forward and reverse zone file.
[email protected]:/etc/bind# cd zones
Now open forward zone file via any editor.
[email protected]:/etc/bind/zones# vi db.fwd.technologyrss.local
Sample below my config you can change it for your domain name.
; ; BIND data file for local loopback interface ; $TTL 604800 @ IN SOA ns1.technologyrss.local. root.ns1.technologyrss.local. ( 6 604800 86400 2419200 604800 ) ; @ IN NS localhost. @ IN A 127.0.0.1 @ IN AAAA ::1 ;Name Server Information IN NS ns1.technologyrss.local. ;Name Server A records ns1.technologyrss.local. IN A 10.66.40.50
then save it Esc :wq press Enter.
Step #07: Now open reverse zone file via any editor.
[email protected]:/etc/bind/zones# vi db.rev.technologyrss.local
Sample below my config you can change your domain name.
; ; BIND data file for local loopback interface ; $TTL 604800 @ IN SOA ns1.technologyrss.local. root.ns1.technologyrss.local. ( 5 604800 86400 2419200 604800 ) ; @ IN NS localhost. @ IN A 127.0.0.1 @ IN AAAA ::1 ;Name Server Information IN NS ns1.technologyrss.local. ;PTR records from ip last two part 40.50 IN PTR ns1.technologyrss.local.
then save it Esc :wq press Enter.
My server IP address 10.66.40.50 so it last two 40.50 PTR record.
Now bind service restart
service bind9 restart
[email protected]:/etc/bind/zones# service bind9 restart
Step #08: Check zone file working properly.
[email protected]:/etc/bind/zones# named-checkzone 66.10.in-addr.arpa db.fwd.technologyrss.local db.fwd.technologyrss.local:20: ignoring out-of-zone data (ns1.technologyrss.local) zone 66.10.in.addr.arpa/IN: loaded serial 2 OK [email protected]:/etc/bind/zones# named-checkzone 66.10.in-addr.arpa db.rev.technologyrss.local zone 66.10.in.addr.arpa/IN: loaded serial 2 OK
Step #09: Manage DNS server from web GUI so now I am install webmin into my dns server.
[email protected]:~# apt update
Add webmin repo into sources list file
[email protected]:~# vi /etc/apt/sources.list
deb http://download.webmin.com/download/repository sarge contrib deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib
Check public key using below command
[email protected]:~# wget -q http://www.webmin.com/jcameron-key.asc -O- | sudo apt-key add –
Now run update command
[email protected]:~# apt-get update
Then install webmin package using below command.
[email protected]:~# apt-get install webmin
After installation done! Then login using below URL.
https://10.66.40.50:10000
All is done!
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