Install BIND (DNS Server) di CentOS

Salah satu aplikasi DNS server yang mudah kita pelajari adalah BIND. Tutorial cara installasi pun beragam ada yang sangat lengkap bahkan mungkin sudah level advanced. Tulisan saya kali ini mencoba memberikan installasi dan konfigurasi yang masih sangat dasar sekali agar mudah di ikuti dan di pahami.

Install DNS

Langkah pertama yang dilakukan adalah melakukan installasi paket BIND apabila belum terinstall di CentOS

yum -y install bind bind-utils

Setup BIND

Setelah installasi selesai, sebelum melakukan konfigurasi, lakukan backup file konfigurasi bind terlebih dahulu:

cp /etc/named.conf /etc/named.conf.default

Rubah isi file named.conf

vi /etc/named.conf

Rubah beberapa konfigurasi seperti berikut dan tambahkan konfigurasi domain yang hendak menggunakan DNS server. Disini saya mencontohkan domain linboxs.net

//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//

options {
 # listen-on port 53 { 127.0.0.1; };
 # listen-on-v6 port 53 { ::1; };
 listen-on-v6 {None;};
 directory "/var/named";
 dump-file "/var/named/data/cache_dump.db";
 statistics-file "/var/named/data/named_stats.txt";
 memstatistics-file "/var/named/data/named_mem_stats.txt";
 allow-query { any; };
 recursion yes;
 dnssec-enable yes;
 dnssec-validation yes;
 dnssec-lookaside auto;

/* Path to ISC DLV key */

 bindkeys-file "/etc/named.iscdlv.key";

 managed-keys-directory "/var/named/dynamic";

};

logging {
 channel default_debug {
 file "data/named.run";
 severity dynamic;
 };
};

zone "." IN {
 type hint;
 file "named.ca";
};

zone "linboxs.net" IN {
 type master;
 file "linboxs.net";
 allow-update {none;};
};

include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

Ini adalah tambahan konfigurasi untuk domain linboxs.net

zone "linboxs.net" IN {
 type master;
 file "linboxs.net";
 allow-update {none;};
};

Setiap domain yang ada di DNS maka harus dibuat file forward zone seperti berikut:

vi /var/named/linboxs.net

Isi dari file forward zone untuk domain linboxs.net:

$TTL 86400
@ IN SOA ns1.linboxs.net. root.linboxs.net. (
  2013042201 ;Serial
  3600       ;Refresh
  1800       ;Retry
  604800     ;Expire
  86400      ;Minimum TTL
)

; Specify our two nameservers
     IN NS    ns1.linboxs.net.

; Resolve nameserver hostnames to IP, replace with your two droplet IP addresses.
ns1  IN A     192.168.1.112

; Define hostname -> IP pairs which you wish to resolve
@    IN A     192.168.1.112
@    IN MX 10 mail.linboxs.net.
www  IN A     192.168.1.112
mail IN A     192.168.1.112

Simpan isi file di atas, kemudian start service bind:

/etc/init.d/named start

Set agar services start otomatis pada saat booting

chkconfig named on

Agar dapat mengenali domain linboxs.net, maka tambahkan nameserver server DNS di dalam file berikut:

vi /etc/resolv.conf

Isi resolv.conf:

nameserver 192.168.1.112

Lakukan pengecekan menggukan perintah nslookup

nslookup linboxs.net
Server: 192.168.1.112
Address: 192.168.1.112#53

Name: linboxs.net
Address: 192.168.1.112

Lakukan pengecekan menggunakan perintah dig

# dig linboxs.net

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.23.rc1.el6_5.1 <<>> linboxs.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44907
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; QUESTION SECTION:
;linboxs.net. IN A

;; ANSWER SECTION:
linboxs.net. 86400 IN A 192.168.1.112

;; AUTHORITY SECTION:
linboxs.net. 86400 IN NS ns1.linboxs.net.

;; ADDITIONAL SECTION:
ns1.linboxs.net. 86400 IN A 192.168.1.112

;; Query time: 1 msec
;; SERVER: 192.168.1.112#53(192.168.1.112)
;; WHEN: Wed Mar 5 10:39:47 2014
;; MSG SIZE rcvd: 81

Lakukan pengecekan menggunakan perintah ping

# ping linboxs.net
PING linboxs.net (192.168.1.112) 56(84) bytes of data.
64 bytes from linboxs.net (192.168.1.112): icmp_seq=1 ttl=64 time=0.045 ms
64 bytes from linboxs.net (192.168.1.112): icmp_seq=2 ttl=64 time=0.058 ms
64 bytes from linboxs.net (192.168.1.112): icmp_seq=3 ttl=64 time=0.078 ms
^C
--- linboxs.net ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2557ms
rtt min/avg/max/mdev = 0.045/0.060/0.078/0.015 ms

Jreng jreng…  Server nya sudah bisa dimanfaatkan sebagai DNS server 😀

Sekian, semoga bermanfaat.

Salam,

Linboxs

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