Dns

[JoderCoder]

Hi, it is maybe very simple question but i am not really familiar with DNS.

I would like my DNS not to return a result (or to return No such name), when a particular query is made. For example, if client wants to know the IP of hostname1, i'd like my DNS to return nothing, how can i set this ?

thanks much!

[Arulmurugan]

Hi, it is maybe very simple question but i am not really familiar with DNS.

I would like my DNS not to return a result (or to return No such name), when a particular query is made. For example, if client wants to know the IP of hostname1, i'd like my DNS to return nothing, how can i set this ?

thanks much!

Hello,
DNS server normally returns mapping ( name to IP address ) for any client's request. if you dont want to return for all clients, better you can shutdown the DNS/BIND service from you Server.

If you don't want to answer for set host/network , then there are way to do it.

1.allow_query = { host address /network address };
2.top level you can configure your Firewall to deny set of IP address on target port as DNS/BIND's port( eg 53 ), So that the traffic on port 53 willl not flow from all unwanted host.

If you have any doubts, please feel free to ask.

Regards,
Arul