Setting DNS Ubuntu 11.10

Setting DNS Server di Ubuntu 11.10 (text)

Pada terminal, masukkan perintah berikut untuk menginstal dns:

$ sudo apt-get install bind9

Untuk pengujian dan troubleshooting masalah DNS adalah paket dnsutils. Untuk menginstal dnsutils masukkan berikut ini:

$ sudo apt-get install dnsutils

Edit /etc/bind/ named.conf.options : (tambahkan DNS IP ISP Anda)
$ sudo pico /etc/bind/named.conf.options

directory “/var/cache/bind”;
// If there is a firewall between you and nameservers you want
// to talk to, you may need to fix the firewall to allow multiple
// ports to talk. See http://www.kb.cert.org/vuls/id/800113
// If your ISP provided one or more IP addresses for stable
// nameservers, you probably want to use them as forwarders.
// Uncomment the following block, and insert the addresses replacing
// the all-0′s placeholder.
// forwarders {
// 0.0.0.0;
// };
//

forwarders {
202.155.0.10;
202.155.0.15;
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
};

Primary Master untuk domain lukman.com. Edit /etc/bind/named.conf.local:

$ sudo pico /etc/bind/named.conf.local

//
// 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 “lukman.com” {
type master;
file “/etc/bind/db.lukman.com”;
};

Membuat file / etc / bind / db.lukman.com:

# sudo cp /etc/bind/db.local /etc/bind/db.lukman.com

Edit file /etc/bind/db.lukman.com
$ sudo pico /etc/bind/db.lukman.com
;
; BIND data file for local loopback interface
;
$TTL 604800
@         IN     SOA ns.lukman.com. root.lukman.com. (
                                        2 ; Serial
                              604800 ; Refresh
                                86400 ; Retry
                            2419200 ; Expire
                            604800 ) ; Negative Cache TTL
;
@          IN     NS         ns.lukman.com.
@          IN     A           192.168.50.1
@          IN     AAAA    ::1
ns         IN     A           192.168.50.1
www     IN     A           192.168.50.1

Reverse Zone File
Edit /etc/bind/named.conf.local :

$ sudo pico /etc/bind/named.conf.local
//
// 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 “lukman.com” {
type master;
file “/etc/bind/db.lukman.com”;
};

zone “50.168.192.in-addr.arpa” {
type master;
notify no;
file “/etc/bind/db.192″;
};

Sekarang buat file /etc/bind/db.192 :

$ sudo cp /etc/bind/db.127 /etc/bind/db.192

Edit /etc/bind/db.192 :
                    $ sudo pico /etc/bind/db.192

;
; BIND reverse data file for local loopback interface
;
$TTL 604800
@          IN      SOA ns.lukman.com. root.lukman.com. (
                                                      1 ; Serial
                                            604800 ; Refresh
                                              86400 ; Retry
                                          2419200 ; Expire
                                          604800 ) ; Negative Cache TTL
;
@          IN       NS         ns.
206       IN       PTR       ns.lukman.com.

restart BIND9:

$ sudo /etc/init.d/bind9 restart

Secondary Master
Untuk membuat DNS master dan Slave, contoh :
DNS Master IP Address 192.168.50.1
DNS Slave IP Address 192.168.50.111
Pada MASTER:
edit /etc/bind/named.conf.local:

zone “lukman.com” {
type master;
file “/etc/bind/db.lukman.com”;
allow-transfer { 192.168.50.111; };
};
zone “50.168.192.in-addr.arpa” {
type master;
notify no;
file “/etc/bind/db.192″;
allow-transfer { 192.168.50.111; };
};

Pada SLAVE :
Edit /etc/bind/named.conf.local :

zone “lukman.com” {
type slave;
file “db.lukman.com”;
masters { 192.168.50.1; };
};
zone “50.168.192.in-addr.arpa” {
type slave;
file “db.192″;
masters { 192.168.50.1; };
};

Restart BIND9

$ sudo /etc/init.d/bind9 restart

resolv.conf
edit /etc/resolv.conf :
       $ sudo pico /etc/resolv.conf

nameserver 192.168.50.1
nameserver 202.155.0.10
nameserver 202.155.0.15

dig

dig -x 192.168.50.1

ping

ping lukman.com

SETTING ROUTER DI UBUNTU 11.10 (TEXT)

Pertama masuk ke root

$ sudo su

Kemudian masukan password

Membuat file Masquerade

$ sudo pico masquerade

Isikan file Masquerade :

#!/bind/bash

iptables -F

iptables -X

iptables -P INPUT ACCEPT

iptables -P OUTPUT ACCEPT

iptables -P FORWARD ACCEPT

iptables -t nat -A POSTROUTING -s 192.168.8.0/24 -d 0/0 -j MASQUERADE

kemudian save

keterangan : 192.168.8.0 = IP Local /24 = Netmask

kemudian aktifkan file Masquerade

$ chmod u+x masquerade

Jalankan file Masquerade

$ ./masquerade

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