The original of this article you can find
here.
DNS (Domain Name Service) Server is an important server for the Internet. It determines the name of
network-computer within the Internet. The main work of the DNS server is exchange IP address to the hostname,
hostname to the IP address. As mentioned in the Mail Server page, MX record is often required and is provided
by the DNS server.
In the FreeBSD System, the configuration file is distributed in the directory; /etc/namedb/. The important
files are:
named.conf
named.root
acl hosts-allow {
localhost;
209.216.123.13;
209.216.123.14;
};
options {
directory "/etc/namedb";
allow-transfer { hosts-allow; };
};
zone "v-dt.com" in {
type master;
file "v-dt.com.zone";
};
zone "0.0.127.in-addr.arpa" {
type master;
file "0.0.127.in-addr.arpa";
};
zone "SUB128.221.224.202.in-addr.arpa" in {
type master;
file "SUB128.221.224.202.rev";
};
zone "." {
type hint;
file "named.root";
};
for each file,v-dt.com.zone and SUB128.221.224.202.rev describes the relationship between IP address and host-name as shown below:
$TTL 86400
@ IN SOA nsa.v-dt.com. admin.nsa.v-dt.com. (
200108284 ; Serial
3600 ; Refresh
900 ; Retry
3600000 ; Expire
3600 ) ; Minimum
;
IN NS nsa.v-dt.com
IN NS nsb.v-dt.com
IN A 209.216.123.13
; MX
;@ORIGIN v-dt.com.
IN MX 5 nsa
IN MX 10 nsb
; Do Timely, Inc.
fw IN A 209.216.123.12
nsa IN A 209.216.123.13
IN MX 10 nsa.v-dt.com.
www IN CNAME nsa.v-dt.com.
yamashou IN CNAME nsa.v-dt.com.
nsb IN A 209.216.123.14
IN MX 10 nsb.v-dt.com.
localhost IN A 127.0.0.1
|
$TTL 86400
;@ORIGIN SUB128.221.224.202.in-addr.arpa.
@ IN SOA nsa.v-dt.com. admin.nsa.v-dt.com. (
200108283 ; Serial
3600 ; Refresh
900 ; Retry
3600000 ; Expire
3600 ) ; Minimum
;
IN NS 209.216.123.13
IN NS 209.216.123.14
; Do Timely, Inc.
129 IN PTR fw.v-dt.com.
130 IN PTR nsa.v-dt.com.
131 IN PTR nsb.v-dt.com.
|
Your configuration files.
The named.root file is common file and do not be changed. It is required to search hostname and IP address
which are not of your network. The named.conf file includes the details about your networks. The sample
format which is used in our network is listed below.
