BIND : Use View Statement2020/05/03

include "/etc/bind/named.conf.options";
include "/etc/bind/named.conf.local";
# comment out
#include "/etc/bind/named.conf.default-zones";
# add
include "/etc/bind/named.conf.internal-zones";
include "/etc/bind/named.conf.external-zones";

# add : set ACL entry for local network
acl internal-network {
        10.0.0.0/24;
};

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

.....
.....

        # add local network set on [acl] section above
        # network range you allow to recieve queries from hosts
        allow-query { localhost; internal-network; };
        # network range you allow to transfer zone files to clients
        # add secondary DNS servers if it exist
        allow-transfer { localhost; };
        # add recursion range your allow recursive query
        allow-recursion { localhost; internal-network; };

        //=======================================================================
        // 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;

        # if not listen IPV6, change [any] to [none]
        listen-on-v6 { any; };
};

view "internal" {
        # set internal network zones
        match-clients {
                localhost;
                internal-network;
        };
        zone "srv.world" {
                type master;
                file "/etc/bind/srv.world.lan";
                allow-update { none; };
        };
        zone "0.0.10.in-addr.arpa" {
                type master;
                file "/etc/bind/0.0.10.db";
                allow-update { none; };
        };
        include "/etc/bind/named.conf.default-zones";
};

view "external" {
        # match all except targets defined on [match-clients] on internal section
        match-clients { any; };
        # allow all queries
        allow-query { any; };
        # not allow recursive queries
        recursion no;
        zone "srv.world" {
                type master;
                file "/etc/bind/srv.world.wan";
                allow-update { none; };
        };
        zone "80.0.16.172.in-addr.arpa" {
                type master;
                file "/etc/bind/80.0.16.172.db";
                allow-update { none; };
        };
};