Linux How to..

TAG: install dnsmasq

Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server. It is designed to provide DNS and, optionally, DHCP, to a small network. It can serve the names of local machines which are not in the global DNS. The DHCP server integrates with the DNS server and allows machines with DHCP-allocated addresses to appear in the DNS with names configured either in each host or in a central configuration file. Dnsmasq supports static and dynamic DHCP leases and BOOTP/TFTP for network booting of diskless machines.
Dnsmasq is targeted at home networks using NAT and connected to the internet via a modem, cable-modem or ADSL connection but would be a good choice for any smallish network (up to 1000 clients is known to work) where low resource use and ease of configuration are important.
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install dnsmasq package via yum
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#yum install dnsmasq
#vi /etc/dnsmasq.conf
input line below  :

interface=eth1                          --> interface LAN for LISTEN DNS port udp :53  and allow network zone can resolve forwarder dns service
success installedclient pc can point dns  to dnsmasq ip . dnsmasq service is forwarder dns service .