20Lab 7 Domain Name Server

1. Domain Name 2. Domain Name

1. Server domain com dot com

/etc/hosts vi server IP Address Server Server

/etc/named.conf zone forward,reverse forward com1.zone ,reverse com1.rev forward server (Chiangmai.com) zone slave slaves/com.zone IP Address 10.2.7.56

2. Server a.com , b.com , c.com , chiangmai.com

directory /var/named/chroot/var/named copy localhost.zone com1.zone vi com1.zone

com1.rev copy com1.zone

save

copy com1.zone slaves/com1.zone server chiangmai.com

vi save

restart named service

3.

#nslookup a.com b.com c.com IP Address IP Address

4. Server 2 sub domain chiangmai.com chiangmai.com

vi /etc/hosts IP domain chiangmai.com

vi /etc/named.conf zone forward

named.conf forward chiangmai.com server .com

5. Server x.chiangmai.com , y.chiangmai.com , z.chiangmai.com directory /var/named/chroot/var/named copy localhost.zone chiangmai.com.zone vi

save Service named restart restart service

6. DNS Server 2 Server 1 host l IP Address Server server

7.

server 2 (chiangmai.com) nslookup x.chiangmai.com y.chiangmai.com z.chiangmai.com IP Address

Domain Name Server server bind server server 2 server 1 .com a.com b.com c.com chiangmai.com server 2 chiangmai.com x.chiangmai.com y.chiangmai.com z.chiangmai.com ip server /etc/hosts zone /etc/named.conf zone 2 forward reverse 2 com1.zone com1.rev server DNS Server 2 zone server1 slave slaves/com.zone chiangmai.com.zone server2 server2 forward /etc/named.conf .com server1

1. Option forwarder named.conf Forwarder server zone server forwarder IP Address

2. Caching name server server DNS request Bandwidth cache DNS Caching name server DNS server