options {
        directory "/var/cache/bind";

        // If there is a firewall between you and nameservers you want
        // to talk to, you may need to fix the firewall to allow multiple
        // ports to talk.  See http://www.kb.cert.org/vuls/id/800113

        // If your ISP provided one or more IP addresses for stable
        // nameservers, you probably want to use them as forwarders.
        // Uncomment the following block, and insert the addresses replacing
        // the all-0's placeholder.

        forwarders {
             // OpenDNS servers
             208.67.222.222;
             208.67.220.220;
             // ADSL router
             192.168.1.1;
        };

        // Security options
        listen-on port 53 { 127.0.0.1; 192.168.1.100; };
        allow-query { 127.0.0.1; 192.168.1.0/24; };
        allow-recursion { 127.0.0.1; 192.168.1.0/24; };
        allow-transfer { none; };

        //========================================================================
        // If BIND logs error messages about the root key being expired,
        // you will need to update your keys.  See https://www.isc.org/bind-keys
        //========================================================================
        dnssec-validation auto;

        auth-nxdomain no;    # conform to RFC1035
        // listen-on-v6 { any; };
};