bind

BIND is an open source system DNS server or an authoritative name server, and provides features like load balancing, notify, dynamic update, split DNS, DNSSEC, IPv6, and more.

Local Cache

To speed up DNS resolution you may add a local DNS.

sudo apt install bind9

Now setup the name resolution:

/etc/bind/named.options

// your default dns servers (isp, firewall, router, opendns, etc.)
forwarders {
    // DNS for internal networks
    10.10.10.10;
    10.10.10.11;
    172.17.100.10;
    172.17.100.11;
    // google-public-dns-a.google.com
    8.8.8.8; 
};
// locally no dnssec needed
dnssec-enable no;
dnssec-validation no;

Now setup name resolution to use local nameserver:

resolv.conf

/etc/resolvconf/resolv.d/tail
nameserver 127.0.0.1

Nameserver per Domain

You can specify a specific nameserver for each domain you want to be resolved:

```text title="/etc/bind/named.conf.local" zone "test.local" IN { type forward; forwarders {172.17.10.10; 172.17.10.11;}; };

zone "stage.local" IN { type forward; forwarders {172.17.10.10; 172.17.10.11;}; };

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Last update: December 17, 2021