BIND (singkatan dari bahasa Inggris: Berkeley
Internet Name Domain) adalah server DNS yang paling umum digunakan
di Internet, khususnya pada sistem operasi bertipe Unix yang
secara de facto merupakan standar. BIND awalnya dibuat
oleh empat orang mahasiswa di CSRG Universitas
California Berkeley dan pertama kali dirilis di
dalam 4.3BSD. Paul Vixie kemudian meneruskan pengembangannya
pada tahun 1988 saat bekerja di DEC.
(http://idwikipedia.com)
Meinstall dan mensetting DNS Server
dengan bind-chroot.
a. Melakukan installasi melalui
terminal.
# yum install bind bind-chroot -y
b. Memindahkan file-file dari lokasi
default ke dalam directory “chroot” ke dalam pathnya masing-masing karena akan
dikonfigurasi dengan mode “chroot”.
# grep ROOTDIR /etc/sysconfig/named
#
ROOTDIR="/var/named/chroot" -- will run named in a chroot
environment.
#empty in the ROOTDIR directory. It
will simplify maintenance of your
#at startup. Don't add -t here, use
ROOTDIR instead.
ROOTDIR=/var/named/chroot
#mv /etc/named*
/var/named/chroot/etc/
#cp /etc/rndc.key
/var/named/chroot/etc/
# mv /var/named/*
/var/named/chroot/var/named/
#mv /usr/lib/bind
/var/named/chroot/usr/lib/
c. Masuk ke direktori bind chroot.
#cd /var/named/chroot/etc/
#nano named.conf
Konfigurasi :
include "/etc/rndc.key";
// assume our server has the IP
192.168.10.5 serving the 192.168.10.0/24
subnet
controls {
inet 127.0.0.1 allow { 127.0.0.1; }
keys { "rndc-key"; };
inet 192.168.20.2 allow {
192.168.20.0/24; } keys {"rndc-key"; };
};
options {
directory "/var/named";
dump-file
"/var/named/data/cache_dump.db";
statistics-file
"/var/named/data/named_stats.txt";
pid-file
"/var/run/named/named.pid";
memstatistics-file
"/var/named/data/named_mem_stats.txt";
recursion yes;
/* Path to ISC DLV key */
bindkeys-file
"/etc/named.iscdlv.key";
allow-recursion {
localhost;
127.0.0.1;
192.168.20.0/24;
};
// these are the opendns servers
(optional)
forwarders {
8.8.8.8;
8.8.4.4;
};
listen-on {
localhost;
127.0.0.1;
192.168.20.2;
};
/*
* If there is a firewall between you
and nameservers you want
* to talk to, you might need to
uncomment the query-source
* directive below. Previous versions
of BIND alwaysasked
* questions using port 53, but BIND
8.1 uses an unprivileged
* port by default.
*/
// query-source address * port 53;
// so people can't try to guess what
version you're running
version "REFUSED";
allow-query {
localhost;
127.0.0.1;
192.168.20.0/24;
};
};
server 192.168.20.2 {
keys { rndc-key; };
};
zone "." IN {
type hint;
file "named.ca";
};
include
"/etc/named.rfc1912.zones";
//forward zone
zone "swalt.info" IN {
type master;
file "swalt.info.zone";
//allow-update { none; };
// we assume we have a slave dns
server with the IP192.168.10.6
allow-transfer { 192.168.20.2; };
notify yes;
also-notify { 192.168.20.2; };
};
//reserve zone
zone
"20.168.192.in-addr.arpa" IN {
type master;
file "192.168.20.zone";
//allow-update { none; };
// we assume we have a slave dns
server with the IP 192.168.10.6
allow-transfer { 192.168.20.2; };
notify yes;
also-notify { 192.168.20.2; };
};
Menyimpan konfiguras dengan ctrl+o
dan ctrl+x untuk keluar.
d. Membuat file zone.
a) Membuat swalt.info.zone yang
terletak di
/var/named/chroot/var/named/
#nano
/var/named/chroot/var/named/swalt.info.zone
Konfigurasi :
$ttl 38400
swalt.info. IN SOA ns.swalt.info.
admin.swalt.info. (
2012041401 ; Serial
10800 ; Refresh after 3 hours
3600 ; Retry after 1 hour
604800 ; Expire after 1 week
86400 ) ; Minimum TTL of 1 day;
swalt.info. IN NS ns.swalt.info.
ns.swalt.info. IN A 192.168.20.2
www.swalt.info. IN CNAME
ns.swalt.info.
cumi.swalt.info. IN CNAME
ns.swalt.info.
mail.swalt.info. IN A 192.168.20.1
kalkun.swalt.info. IN A 192.168.20.3
file.swalt.info. IN A 192.168.20.4
db.swalt.info. IN A 192.168.20.5
b) Membuat file 192.168.20.zone yang
terletak di
/var/named/chroot/var/named/
#nano
/var/named/chroot/var/192.168.20.zone
Konfigurasi :
$TTL 86400
20.168.192.in-addr.arpa. IN SOA
ns.swalt.info.admin.swalt.info. (
2012041402
10800
900
604800
3600 )
20.168.192.in-addr.arpa. IN NS
ns.swalt.info.
2.20.168.192.in-addr.arpa. IN PTR
www.swalt.info
1.20.168.192.in-addr.arpa. IN PTR mail.swalt.info.
2.20.168.192.in-addr.arpa. IN PTR
cumi.swalt.info.
3.20.168.192.in-addr.arpa. IN PTR
kalkun.swalt.info.
4.20.168.192.in-addr.arpa. IN PTR
file.swalt.info.
5.20.168.192.in-addr.arpa. IN PTR
db.swalt.info.
e. Mengedit resolv.conf
#nano /etc/resolv.conf
f. Membuka port 53 untuk DNS server.
#iptables -I INPUT -p tcp -m state
--state NEW -m tcp --dport 53 -j ACCEPT
#iptables -I INPUT -p udp -m state
--state NEW -m udp --dport 53 -j ACCEPT
g. Melakukan restart service named.
# service named restart
h. Melakukan pengetesan kecil untuk
DNS server.
#nslookup ns.swalt.info
