Routing the DNS Traffic via specific interface.

[Netravali Ganesh <gnetravali@xxxxxxxxxxxx>]

Hi ..

I have 2 interfaces eth0 and eth1 on the system connected to different subnets. I need to route all the outgoing DNS traffic of the system via eth1 interface. Pls let me know if below IPTABLES rules is proper way ?

Block the output DNS traffic on eth0 interface.

iptables -A FORWARD -p udp -o eth0 --dport 53 -j DROP

Forward output DNS traffic from eth1 interface

iptables -A FORWARD -p udp -o eth1 --dport 53 -j ACCEPT


Thanks
Ganesh


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