acl "trusted" { x.x.x.x; }; options { directory "/var/cache/bind"; recursion no; # enables recursive queries allow-recursion { trusted; }; # allows recursive queries from "trusted” clients i.e. LB only listen-on { x.x.x.x; }; # ns1 IP address - listen on this address only allow-transfer { none; }; # disable zone transfers by default forwarders { 8.8.8.8; 8.8.4.4; }; // 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 { // 0.0.0.0; // }; //======================================================================== // 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; }; };