master DNS with caching

Udhayakrishnan · 12-01-2009, 05:57 AM

Hi,

I need a help in setting up a DNS which should have my server's forward entries and also caching enabled.

For ex.

If any user of my network with our DNS IP; try to access the servers of ours with the name, mydns should provide that entry from it. If the user tries to use the domain which is not available within our mydns, it should query the dns available in internet and should respond to the query of the user computer.

Kindly update me with the config info.

PS: I can setup master, slave or caching as individual but unable to setup with the above mentioned criterion.

bathory · 12-01-2009, 06:47 AM

Hi,

Unless I miss something, this is how a dns server works. Answers the queries it's authoritative for and forwards to root servers (or forwarders if you setup forwarding) the queries for all other zones.
Anyway assuming you're using bind for your dns server, all you have to do is to add the hint "." zone, among the other zones your server is authoritative for.

Code:

zone "." {
        type hint;
        file "root.hint";
        };

You can get a fresh copy of root.hint, running:

Code:

dig @a.root-servers.net . ns > root.hint

Regards