DNS Server Setup Guide Line on Rhel 6 or Cent Os 6

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For Server Site
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Command line

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[root@server1 ~]#vim /etc/sysconfig/netwprk-scripts/ifcfg-eth0

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Write it in this file
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DEVICE="eth0"
NM_CONTROLLED="yes"
ONBOOT=yes
TYPE=Ethernet
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
IPADDR=192.168.10.2
PREFIX=24
GATEWAY=10.102.1.1
DNS1=192.168.10.2 (Computer )
HWADDR=00:16:EC:38:25:3D

Press ESC (Button)
:x

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Command line

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[root@server1 ~]#vim /etc/hosts

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Edit hosts file
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192.168.10.2 server1.howtoc.com server1 # Added by NetworkManager
127.0.0.1 localhost.localdomain localhost
::1 server1.howtoc.com server1 localhost6.localdomain6 localhost6

Press ESC (Button)
:x

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End of the edit of hosts file

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Command line

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[root@server1 ~]#vim /etc/sysconfig/network

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Edit network file
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NETWORKING=yes
HOSTNAME=server1.howtoc.com

Press ESC (Button)
:x

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End of the edit of hosts file

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Command line

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[root@server1 ~]#vim /etc/resolve.conf

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Edit resolve file
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search howtoc.com
nameserver 192.168.10.2

Press ESC (Button)
:x

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End of the edit of hosts file

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Command line

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[root@server1 ~]#yum -y install bind*
[root@server1 ~]#updatedb

# Find the named.conf file(Main configuration file of BIND)

[root@server1 ~]#locate named.conf
/etc/named.conf
/usr/share/doc/bind-9.7.0/named.conf.default
/usr/share/doc/bind-9.7.0/sample/etc/named.conf
/usr/share/logwatch/default.conf/services/named.conf
/usr/share/man/man5/named.conf.5.gz

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Command line

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Go to below path

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[root@server1 ~]#cd /var/named/chroot/

[root@server1 chroot]#cd etc

[root@server1 etc]#pwd

/var/named/chroot/etc

[root@server1 etc]#cp /usr/share/doc/bind-9.7.0/named.conf.default named.conf

[root@server1 etc]#chgrp named named.conf

[root@server1 etc]#ll named.conf

f -rw-r--r--. 1 root named 930 Aug 3 07:58 named.conf

[root@server1 etc]#vim named.conf

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Edit named.conf file

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// 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;192.168.10.2; };

/*listen-on-v6 port 53 { ::1; };*/

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 { localhost;192.168.10.0/24; };

# transfer range ( set it if you have secondary DNS )

allow-transfer { localhost; 192.168.10.0/24; };,

recursion yes;

dnssec-enable yes;

dnssec-validation yes;

dnssec-lookaside auto;

/* Path to ISC DLV key */

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

};

logging {

channel default_debug {

file "data/named.run";

severity dynamic;

};

zone "." IN {

type hint;

file "named.ca";

};

zone "sajed.com" IN {

type master;

file "forward.zone";

allow-update { none; };

};

zone "10.168.192.in-addr.arpa" IN {

type master;

file "reverse.zone";

allow-update { none; };

};

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

Press ESC (Button)

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End of the edit of named.conf file

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[root@server1 etc]#vim /etc/named.rfc1912.zones

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Edit named.rfc1912.zones file

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// named.rfc1912.zones:

// Provided by Red Hat caching-nameserver package

// ISC BIND named zone configuration for zones recommended by

// RFC 1912 section 4.1 : localhost TLDs and address zones

// and http://www.ietf.org/internet-drafts/draft-ietf-dnsop-default-local-zones-02.txt

// See /usr/share/doc/bind*/sample/ for example named configuration files.

zone "sajed.com" IN {

type master;

file "forward.zone";

allow-update { none; };

};

zone "localhost" IN {

type master;

file "named.localhost";

allow-update { none; };

};

zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" IN {

type master;

file "named.loopback";

allow-update { none; };

};

zone "10.168.192.in-addr.arpa" IN {

type master;

file "reverse.zone";

allow-update { none; };

};

zone "0.in-addr.arpa" IN {

type master;

file "named.empty";

allow-update { none; };

};

Press ESC (Button)

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End of the edit of named.rfc1912.zones file

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[root@server1 etc]#/etc/init.d/named restart

Stopping named: [ OK ]

Starting named: [ OK ]

[root@server1 etc]#vim /etc/named.conf

[root@server1 named]#cp named.localhost forward.zone

[root@server1 named]#cp named.loopback reverse.zone

[root@server1 named]#vim /var/named/forward.zone

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Edit forward.zone file

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$TTL 1D

@ IN SOA server1.sajed.com. root.sajed.com. (

0 ; serial

1D ; refresh

1H ; retry

1W ; expire

3H ) ; minimum

IN NS server1.sajed.com.

IN A 192.168.10.2

server1 IN A 192.168.10.2

Press ESC (Button)

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End of the edit of forward.zone file

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[root@server1 named]#vim /var/named/reverse.zone

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Edit reverse.zone file

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$TTL 1D

@ IN SOA server1.sajed.com. root.sajed.com. (

0 ; serial

1D ; refresh

1H ; retry

1W ; expire

3H ) ; minimum

IN NS server1.sajed.com.

IN PTR sajed.com.

IN A 255.255.255.0

2 IN PTR server1.sajed.com.

Press ESC (Button)

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End of the edit of reverse.zone file

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Command line

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[root@server1 named]#chgrp named forward.zone

[root@server1 named]#chgrp named reverse.zone
[root@server1 named]#/etc/init.d/named restart
[root@server1 named]#dig server1.howtoc.com
; <<>> DiG 9.7.0-P2-RedHat-9.7.0-5.P2.el6 <<>> server1.sajed.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50351

;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:

;server1.sajed.com. IN A

;; ANSWER SECTION:

server1.sajed.com. 86400 IN A 192.168.10.2

;; AUTHORITY SECTION:

sajed.com. 86400 IN NS server1.sajed.com.

;; Query time: 0 msec

;; SERVER: 192.168.10.2#53(192.168.10.2)

;; WHEN: Tue Oct 16 10:13:40 2012

;; MSG SIZE rcvd: 67

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Command line

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[root@server1 named]#dig -x 192.168.10.2

; <<>> DiG 9.7.0-P2-RedHat-9.7.0-5.P2.el6 <<>> -x 192.168.10.2

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45077

;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; QUESTION SECTION:

;2.10.168.192.in-addr.arpa. IN PTR

;; ANSWER SECTION:

2.10.168.192.in-addr.arpa. 86400 IN PTR server1.sajed.com.

;; AUTHORITY SECTION:

10.168.192.in-addr.arpa. 86400 IN NS server1.sajed.com.

;; ADDITIONAL SECTION:

server1.howtoc.com. 86400 IN A 192.168.10.2

;; Query time: 1 msec

;; SERVER: 192.168.10.2#53(192.168.10.2)

;; WHEN: Tue Oct 16 10:13:08 2012

;; MSG SIZE rcvd: 106

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Command line

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[root@server1 named]#nslookup

> server1.sajed.com

Server: 192.168.10.2

Address: 192.168.10.2#53

Name: server1.sajed.com

Address: 192.168.10.2

> 192.168.10.2

Server: 192.168.10.2

Address: 192.168.10.2#53

2.10.168.192.in-addr.arpa name = server1.howtoc.com.

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Server Setup Guide line on RHEL 6 and CENT OS 6

DNS Server Setup Guide Line on Rhel 6 or Cent Os 6

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