Original CentOS for Smart DNS

First, Environment:

centos-6.6-x64 -bit operating system, IP Address: 210.38.248.7

Second, Installation and Configuration Bind Service:

1. command:yum Install bind

2. configuration:

1) Configuration /etc/named.conf File:

ACL ip1{

210.38.240.0/24; Defining a 240 network segment

};

ACL ip2{

210.38.248.0/24; Defining a 248 network segment

};

Options {

Directory "/var/named"; Service installation directory

recursion Yes; Whether to turn on DNS recursion

};

View "First" {

match-clients {ip1;}; Match 240 network segments

recursion Yes;

Zone "." in {

Type hint;

File "named.ca";

};

Zone "A.org" in {

Type master;

File "A.org.first";

};

Zone "1.168.192.in-addr.arpa" in {

Type master;

File "1.168.192";

};

};

View "Second" {

match-clients {ip2;}; Match 248 network segments

Recursion No;

Zone "." in {

Type hint;

File "named.ca";

};

Zone "A.org" in {

Type master;

File "A.org.second";

};

Zone "5.168.192.in-addr.arpa" in {

Type master;

File "5.168.192";

};

};

2) Establish A.org.first and the A.org.second file and configure:

- Create: touch A.org.first

Touch A.org.second

- Configuration:

Configuration A.org.first as follows :

$TTL 1200

$ORIGIN a.org.

@ in SOA ns1.a.org. Admin.a.org. (

2014091301

6H

30M

15D

3D)

In NS ns1.a.org.

In NS ns2.a.org.

In MX ten mail.a.org.

NS1 in A 192.168.1.5

NS2 in A 192.168.1.6

Mail in A 192.168.1.7

www in A 192.168.1.8

Configuration A.org.first as follows :

$TTL 1200

$ORIGIN a.org.

@ in SOA ns1.a.org. Admin.a.org. (

2014091301

6H

30M

15D

3D)

In NS ns1.a.org.

In NS ns2.a.org.

In MX ten mail.a.org.

NS1 in A 192.168.5.5

NS2 in A 192.168.5.6

Mail in A 192.168.5.7

www in A 192.168.5.8

Configuration 1.168.192 as follows :

$TTL 86400

@ in SOA ns1.a.org. Admin.a.org. (

2014091301

6H

30M

15D

3D)

In NS ns1.a.org.

In PTR a.org.

5 in PTR ns1.a.org.

6 in PTR ns2.a.org.

7 in PTR mail.a.org.

8 in PTR www.a.org

Configuration 5.168.192 as follows :

$TTL 86400

@ in SOA ns1.a.org. Admin.a.org. (

2014091301

6H

30M

15D

3D)

In NS ns1.a.org.

In PTR a.org.

5 in PTR ns1.a.org.

6 in PTR ns2.a.org.

7 in PTR mail.a.org.

8 in PTR www.a.org

- Copy files to /var/named Directory:

#cp a.org.*/var/named

#cp 1.168.192/var/named

#cp 5.168.192/var/named

3. Restart :service named restart

Third, test: in the 240/248 network segment of the computer terminal using the command: nslookup ns1.a.org (domain name) test, to view the resolved IP address.

Original CentOS for Smart DNS