Name Resolution2015/11/05

	Create zone files that servers resolve IP address from domain name.
[1]	For internal zone, This example uses internal address [10.0.0.0/24], domain name [srv.world], but please use your own one when you set config on your server.

[root@dlp ~]#

vi /var/named/srv.world.lan

$TTL 86400
@   IN  SOA     dlp.srv.world. root.srv.world. (
        2015110501  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)

# define name server

        IN  NS      dlp.srv.world.

# define name server's IP address

        IN  A       10.0.0.30

# define mail exchanger

        IN  MX 10   dlp.srv.world.

# define IP address of a hostname

dlp     IN  A       10.0.0.30

[2]	For external zone, This example uses external address [172.16.0.80/29], domain name [srv.world], but please use your own one when you set config on your server.

[root@dlp ~]#

vi /var/named/srv.world.wan

$TTL 86400
@   IN  SOA     dlp.srv.world. root.srv.world. (
        2015110501  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)

# define name server

        IN  NS      dlp.srv.world.

# define name server's IP address

        IN  A       172.16.0.82

# define mail exchanger

        IN  MX 10   dlp.srv.world.

# define IP address of a hostname

dlp     IN  A       172.16.0.82

Address Resolution

	Create zone files that servers resolve domain names from IP address.
[3]	For internal zone, This example uses internal address [10.0.0.0/24], domain name [srv.world], but please use your own one when you set config on your server.

[root@dlp ~]#

vi /var/named/0.0.10.db

$TTL 86400
@   IN  SOA     dlp.srv.world. root.srv.world. (
        2015110501  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)

# define name server

        IN  NS      dlp.srv.world.

# define the range of this domain included

        IN  PTR     srv.world.
        IN  A       255.255.255.0

# define hostname of an IP address

30      IN  PTR     dlp.srv.world.

[4]	For external zone, This example uses external address [172.16.0.80/29], domain name [srv.world], but please use your own one when you set config on your server.

[root@dlp ~]#

vi /var/named/80.0.16.172.db

$TTL 86400
@   IN  SOA     dlp.srv.world. root.srv.world. (
        2015110501  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)

# define name server

        IN  NS      dlp.srv.world.

# define the range of this domain included

        IN  PTR     srv.world.
        IN  A       255.255.255.248

# define hostname of an IP address

82      IN  PTR     dlp.srv.world.

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