Configure Slave DNS

	Configure DNS as as Slave Server. It's easy to set up it. Following example shows an environment that master DNS is "172.16.0.82", Slave DNS is "slave.example.host".
[1]	Configure DNS master server

root@dlp:~# vi /etc/bind/named.conf.options options { directory "/etc/bind"; // If there is a firewall between you and nameservers you want // to talk to, you may need to fix the firewall to allow multiple // ports to talk. See http://www.kb.cert.org/vuls/id/800113 // If your ISP provided one or more IP addresses for stable // nameservers, you probably want to use them as forwarders. // Uncomment the following block, and insert the addresses replacing // the all-0's placeholder. // forwarders { //       0.0.0.0; // }; # add a range you allow to transfer zones allow-transfer { localhost; 10.0.0.0/24; 172.16.0.80/29; }; auth-nxdomain no; # conform to RFC1035 # listen-on-v6 { any; }; }; root@dlp:~# rndc reload server reload successful

[2]	Configure DNS slave server

root@slave:~#

vi /etc/bind/named.conf.external-zones

# add settings like follows

        zone "server.world" {
                type slave;
                masters { 172.16.0.82; };
                file "slaves/server.world.wan";
        };

root@slave:~#

mkdir /etc/bind/slaves

root@slave:~#

chown bind. /etc/bind/slaves

root@slave:~#

rndc reload

server reload successful
root@slave:~#

ls /etc/bind/slaves

server.world.wan

# zone file in master DNS has been just transfered