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.
★ How To Install DNS (Bind9) On Ubuntu 16.04
★ How To Install DNS (Bind9) On Ubuntu 14.04
System requirements :
- Ubuntu 18.04 VPS or local machine
- RAM 1 GB (More best performance)
- LAN interface
- SSH enable
My Server IP Address : 10.66.40.50
Name server : ns1.technologyrss.local
Step #01: Must be server update complete using below command.
root@ns1:~# apt update && apt upgrade -y
Change server host name like as below. Open hosts file via any editor.
root@ns1:~# 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
root@ns1:~# vi /etc/hostname
ns1
then save it Esc :wq press Enter.
Now reboot your server using command
root@ns1:~# reboot
Step #02: Edit resolv.conf file and add google dns and my ip address as name server.
root@ns1:~# 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
root@ns1:~# apt-get install bind9 bind9utils bind9-doc -y
Step #03: Wait up to installation is completed then goto bind folder.
root@ns1:~# cd /etc/bind/
Now backup or copy default named.conf.local file.
root@ns1:/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.
root@ns1:/etc/bind# cp db.local db.fwd.technologyrss.local
Another one reverse zone file.
root@ns1:/etc/bind# cp db.local cp db.local db.rev.technologyrss.local
Now create zones folder using command
root@ns1:/etc/bind# mkdir /etc/bind/zones
Move created two file into /etc/bind/zones folder.
root@ns1:/etc/bind# mv db.fwd.technologyrss.local zones root@ns1:/etc/bind# mv db.rev.technologyrss.local zones
Step #04: Now edit named.conf.local file then insert forward and reverse file location.
root@ns1:/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.
root@ns1:/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.
root@ns1:/etc/bind# cd zones
Now open forward zone file via any editor.
root@ns1:/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.
root@ns1:/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
root@ns1:/etc/bind/zones# service bind9 restart
Step #08: Check zone file working properly.
root@ns1:/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 root@ns1:/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.
root@ns1:~# apt update
Add webmin repo into sources list file
root@ns1:~# 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
root@ns1:~# wget -q http://www.webmin.com/jcameron-key.asc -O- | sudo apt-key add –
Now run update command
root@ns1:~# apt-get update
Then install webmin package using below command.
root@ns1:~# apt-get install webmin
After installation done! Then login using below URL.
https://10.66.40.50:10000
All is done!
Troubleshooting !!!. Must be add name server ip as your dns server ip address. like this.
root@ns1:~# cat /etc/resolv.conf
Output like this
nameserver 10.66.40.50 nameserver 8.8.8.8 search technologyrss.local
If you see can’t save dns first time so you must be add rndc.conf file. see video last step for this config.
For more details see my YouTube video. Don’t forget subscribe my channel. Please subscribe my channel for more update.
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