Konfigurasi DNS Ubuntu Server 10.4 (LTS)

Pengertian DNS

Domain Name System (DNS) Adalah sebuah aplikasi service di internet yang menerjemahkan sebuah domain name ke IP address dan salah satu jenis system yang melayani permintaan pemetaan IP address ke FQPN (Fany Qualified Domain Name) dan dari FQDN ke IP address. DNS biasanya digunakan pada aplikasi yang berhubungan ke internet sererti Web Browser atau e-mail, Dimana DNS membantu memetakan host name sebuah computer ke IP address. Selain digunakan di internet DNS juga dapat di implementasikan ke private network atau internet.

Konfigurasi DNS Server

1. konfigurasi IP pada server

root@ubuntu:~# ifconfig eth0 10.10.10.1root@ubuntu:~# ifconfig===========================================

eth0 Link encap:Ethernet HWaddr 00:0C:29:40:01:A4inet addr:10.10.10.1 Bcast:10.10.10.255 Mask:255.255.255.0UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1RX packets:94 errors:0 dropped:0 overruns:0 frame:0TX packets:135 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:100RX bytes:10804 (10.5 KiB) TX bytes:11517 (11.2 KiB)Interrupt:19 Base address:0x2000

2. install aplikasi untuk DNS yaitu bind9

admin:~# apt-get install bind9Reading Package Lists... DoneBuilding Dependency Tree... DoneSorry, bind9 is already the newest version.0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

3. masuk konfigurasi DNS

3.1 file pertama yang dikonfigurasi adalah named.conf.localroot@ubuntu:~# nano /etc/bind/named.conf.local3.2 tambahkan baris yang berwarna merah tepat seperti contoh

===========================================// Do any local configuration here//

// Consider adding the 1918 zones here, if they are not used in your// organization//include "/etc/bind/zones.rfc1918";

zone "veteran-it.blogspot.com" {type master;file "/etc/bind/forward";};

zone "10.10.10.in-addr.arpa"{type master;file "/etc/bind/reverse";};===========================================

3.3 Buat file forward dan reverse dengan cara mengcopy dari file db.local

root@ubuntu:~# cp /etc/bind/db.local /etc/bind/forwardroot@ubuntu:~# cp /etc/bind/db.local /etc/bind/reverse

3.4 ubah konfigurasi pada file forward kita ,samakan dengan di bawah iniroot@ubuntu:~# nano /etc/bind/forward===========================================;; BIND data file for local loopback interface;$TTL 604800@ IN SOA vetera-it.blogspot.com. root.veteran-it.blogspot.com. (2 ; Serial604800 ; Refresh86400 ; Retry2419200 ; Expire604800 ) ; Negative Cache TTL;IN NS veteran-it.blogspot.comIN A 10.10.10.1www IN A 10.10.10.1

===========================================

3.5 ubah konfigurasi pada file reverse kita ,samakan dengan di bawah iniroot@ubuntu:~# nano /etc/bind/reverse

===========================================; BIND data file for local loopback interface;$TTL 604800@ IN SOA veteran-it.blogspot.com. root.veteran-it.blogspot.com. (2 ; Serial604800 ; Refresh86400 ; Retry2419200 ; Expire604800 ) ; Negative Cache TTL;@ IN NS veteran-it.blogspot.com.@ IN A veteran-it.blogspot.com..10.10.10 IN PTR www.veteran-it.blogspot.com..

===========================================

3.6 jika sudah cek file resolv.confroot@ubuntu:~# nano /etc/resolv.conf===========================================

nameserver 10.10.10.1domain www.veteran-it.blogspot.comsearch veteran-it.blogspot.com

===========================================

3.7 dan juga file hostsroot@ubuntu:~# nano /etc/hosts===========================================127.0.0.1 localhost10.10.10.1 veteran-it.blogspot.com veteran

# The following lines are desirable for IPv6 capable hosts::1 localhost ip6-localhost ip6-loopbackfe00::0 ip6-localnetff00::0 ip6-mcastprefixff02::1 ip6-allnodesff02::2 ip6-allrouters===========================================

4. jika sudah dikonfigurasi semua restart servis bind dengan command

root@ubuntu:/etc/bind# /etc/init.d/bind9 restart* Stopping domain name service... bind9 [ OK ]* Starting domain name service... bind9 [ OK ]

5. TES

5.1 test apakah DNS server kita sudah berjalan dengan baik dengan cararoot@ubuntu:~# nslookup -sil veteran-it.blogspot.com===========================================Server: 10.10.10.1Address: 10.10.10.1#53

Name: veteran-it.blogspot.comAddress: 10.10.10.1

===========================================

5.2 test ping pada domain kitaroot@ubuntu:~# ping veteran-it.blogspot.com===========================================PING veteran-it.blogspot.com (10.10.10.1): 56 data bytes64 bytes from 10.10.10.1: icmp_seq=0 ttl=255 time=0.0 ms64 bytes from 10.10.10.1: icmp_seq=1 ttl=255 time=0.0 ms===========================================

6. ok, jika sudah bisa semua berarti konfigurasi anda telah BERHASIL