Creating a new TLD for private network

Question

I want to setup a new TLD (foo.) for my the private network so that I can host some child domains which will be accessible from within the network. For this purpose I have setup a DNS server (172.16.100.1) for foo.. For this I created a zone file foo-zonedb.rr with the following records:

$ORIGIN foo.
$TTL  100
@       IN  SOA ns1.tld.foo. hostmaster.tld.foo (
                2012030701
                900
                300
                300
                600
        )
@    300 IN NS ns1.tld.foo.
@    300 IN  A 172.16.143.197
ns1.tld.foo.    300 IN A 172.16.143.197

And also I have added the following entries in /etc/named.conf

zone "foo." {
             type master;
             file "foo-zonedb.rr";
             notify explicit;
    };

Now suppose every machine on the network uses 172.16.1.1 as their DNS server. What configuration should I have to do on 172.16.1.1 so that it won't redirect DNS request for foo. domain to root DNS servers?

Answer 1

type master; does what you want. if 172.16.1.1 is the authoritative server, requests will not go to the root servers. Non-existent entries will result in NXDOMAIN status.

If you want to stop all queries from forwarding to the root-servers, then you should turn recursion off. see: http://www.zytrax.com/books/dns/ch6/#authoritative