Questions with dns zone file

cola · 05-23-2010, 10:04 AM

cat /var/named/se.dr.com.zone

Code:

$TTL 3D
$ORIGIN se.dr.com.
@ IN SOA ns1.se.dr.com. webmaster.se.dr.com. (
    2004042601 ; serial
    86400 ; refresh
    7200 ; retry
    1209600 ; expiry
    1D ; minimum
)

NS se17 ;Inet Address of nameserver
localhost A 127.0.0.1
ns1 CNAME se17
se17 A 172.30.4.100
se18 A 172.30.4.102
se19 A 172.30.4.104

What does the colored line mean?

Code:

se17 A 172.30.4.100
se18 A 172.30.4.102
se19 A 172.30.4.104

Are these similar to these?

Code:

se17.se.dr.com A 172.30.4.100
se18.se.dr.com A 172.30.4.102
se19.se.dr.com A 172.30.4.104

alunduil · 05-23-2010, 10:24 AM

That line declares the server that will be an authoritative source for information about your zone.

Regards,

Alunduil

cola · 05-23-2010, 10:34 AM

Quote:

Originally Posted by alunduil

That line declares the server that will be an authoritative source for information about your zone.

Regards,

Alunduil

Can that line be written in another way?
Is it a shortcut way?

alunduil · 05-23-2010, 11:39 AM

That is a shortcut method for writing out those records. The full way is:

se.dr.com. IN NS se17.se.dr.com.

Regards,

Alunduil