options {
        directory "/var/named";
        dump-file "/var/named/data/cache_dump.db";
        statistics-file "/var/named/data/named_stats.txt";
        /*
         * If there is a firewall between you and nameservers you want
         * to talk to, you might need to uncomment the query-source
         * directive below.  Previous versions of BIND always asked
         * questions using port 53, but BIND 8.1 uses an unprivileged
         * port by default.
         */
         query-source address * port 53;
        notify-source * port 53;
        allow-transfer { 212.241.192.151; 85.92.84.165; };
        recursion yes;
        allow-recursion { internals; };
        transfers-out 400;
};

acl internals { 127.0.0.1; 67.15.50.43; };
acl externals { !internals; any; };