DNS Server - 1 Install BIND

Install BIND to configure DNS server which resolves domain name or IP address. BIND uses 53/TCP,UDP

Install BIND.
[root@dlp ~]# yum -y install bind bind-utils



Configure BIND This example is done with grobal IP address [172.16.0.80/29], Private IP address [10.0.0.0/24], Domain name [server.world]. However, Please use your own IPs and domain name when you set config on your server. ( Actually, [172.16.0.80/29] is for private IP address, though. )

[root@dlp ~]#

vi /etc/named.conf

//
// 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 {

# comment out ( listen all interfaces on the server )

#

 listen-on port 53 { 127.0.0.1; };

# change ( if not use IPv6 )

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";

# query range ( set internal server and so on )

allow-query

{ localhost;

10.0.0.0/24;

 };

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

allow-transfer { localhost; 10.0.0.0/24; };

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";

pid-file "/run/named/named.pid";

session-keyfile "/run/named/session.key";

};

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

# change all from here

view "internal" {
        match-clients {
                localhost;
                10.0.0.0/24;
        };
        zone "." IN {
                type hint;
                file "named.ca";
        };
        zone "server.world" IN {
                type master;
                file "server.world.lan";
                allow-update { none; };
        };
        zone "0.0.10.in-addr.arpa" IN {
                type master;
                file "0.0.10.db";
                allow-update { none; };
        };
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
};
view "external" {
        match-clients { any; };
        allow-query { any; };
        recursion no;
        zone "server.world" IN {
                type master;
                file "server.world.wan";
                allow-update { none; };
        };
        zone "80.0.16.172.in-addr.arpa" IN {
                type master;
                file "80.0.16.172.db";
                allow-update { none; };
        };
};

# allow-query 

⇒ query range you permit

# allow-transfer 

⇒ the range you permit to transfer zone info

# recursion 

⇒ allow or not to search recursively

# view "internal" { *** }; 

⇒ write for internal definition

# view "external" { *** };

⇒ write for external definition

#

For How to write for reverse resolving, Write network address reversely like below.
# 10.0.0.0/24
# network address

⇒ 10.0.0.0

# range of network

⇒ 10.0.0.0 - 10.0.0.255

# how to write

⇒ 0.0.10.in-addr.arpa

# 172.16.0.80/29
# network address

⇒ 172.16.0.80

# range of network

⇒ 172.16.0.80 - 172.16.0.87

# how to write