DNS (domain name system) used to change ip address which form is number become name with domain. with this method, suppose computer or server with IP address 192.168.43.205 recognize by malik.net.id

Install Pattern DNS Server

Open YaST and choose Software > Software Management. Then choose View Patterns and choose DHCP and DNS Server. Confirm installation by anwer ok to install package with dependency. Or run this command in terminal

$ sudo zypper in -t pattern dhcp_dns_server

Configuration

In this case, I set my computer hostname at

# vim /etc/hostname

become

malik.net.id

My ip address is

192.168.43.205

You can check your ip address by yourself with

ifconfig

Suppose i will make

malik.net.id
lib.malik.net.id
mail.malik.net.id
ns.malik.net.id
www.malik.net.id

First, check resolv.conf and default gateway

  # vim /etc/resolv.conf

Result

  search malik.net.id
  nameserver 127.0.0.1
  nameserver 2404:c0:7410:6a2e::1a
  nameserver 192.168.43.1

So, i have IPv4 and IPv6

Then, check default gateway

  # route

Result

  Kernel IP routing table
  Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
  default         192.168.43.1    0.0.0.0         UG    600    0        0 wlan0
  192.168.43.0    0.0.0.0         255.255.255.0   U     600    0        0 wlan0

So, my default gateway is 192.168.43.1

Open YaST DNS Server

just hit Continue
Go to Forwarder and input your default gateway then click Add

Go to Basics Options

Set like this

  allow-query { 127.0.0.1; 192.168.43.1;};
  directory "/var/lib/named";
  disable-empty-zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA";
  dump-file "/var/log/named_dump.db";
  forwarders { 192.168.43.1; };
  include "/etc/named.d/forwarders.conf";
  listen-on port 53 { 127.0.0.1; 192.168.43.1;};
  listen-on-v6 { 2404:c0:7410:6a2e::1a; };
  managed-keys-directory "/var/lib/named/dyn/";
  notify no;
  statistics-file "/var/log/named.stats";

Go to DNS Zones and input your server name as your wish like malik.net.id also create reverse 205.43.168.192.in-addr.arpa then click Add
Click Edit at malik.net.id and you’ll find screen like this, configure it by yourself
Go to NS Records and configure like this
Go to MX Records and do it yourself like this example
Go to Records and just follow this example
After finish all steps, just hit ok
Then edit reverse 205.43.168.192.in-addr.arpa like this
Then click ok

Open terminal, then run this command

  # firewall-cmd --permanenet --add-port=53/tcp

  # firewall-cmd --permanenet --add-port=53/udp

  # firewall-cmd --reload

Run

# systemctl start named

also run web-server and mail server

# systemctl start apache2

# systemctl start postfix

# systemctl start dovecot

Testing

Open terminal

Run this command

# named-checkzone malik.net.id /var/lib/named/master/malik.net.id

Result

zone malik.net.id/IN: loaded serial 2021082701
OK

Then

# nslookup malik.net.id

Result

Server:         127.0.0.1
Address:        127.0.0.1#53

Name:   malik.net.id
Address: 192.168.43.205
Name:   malik.net.id
Address: 2404:c0:741e:720a::f0

Then

# host malik.net.id

Result

malik.net.id has address 192.168.43.205
malik.net.id has IPv6 address 2404:c0:741e:720a::f0
malik.net.id mail is handled by 3 mail.malik.net.id.

Then

# dig malik.net.id

Result

; <<>> DiG 9.16.6 <<>> malik.net.id
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29143
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 49a35869055a2ea20100000061289b42eff26e569098f77a (good)
;; QUESTION SECTION:
;malik.net.id.                  IN      A

;; ANSWER SECTION:
malik.net.id.           172800  IN      A       192.168.43.205

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Aug 27 14:58:58 WIB 2021
;; MSG SIZE  rcvd: 85

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