BIND : Configure for Internal Network 
2022/04/26
  	
Install BIND to Configure DNS (Domain Name System) Server to provide Name or 
Address Resolution service for Clients.



[1]  Install BIND.

root@dlp:~# apt -y install bind9 bind9utils



[2] On this example, Configure BIND for 
        Internal Network.

The example follows is for the case that Local network is [10.0.0.0/24], Domain
 name is [srv.world], Replace them to your own environment.

root@dlp:~# vi /etc/bind/named.conf
include "/etc/bind/named.conf.options";
include "/etc/bind/named.conf.local";
include "/etc/bind/named.conf.default-zones";
# add
include "/etc/bind/named.conf.internal-zones";


root@dlp:~# vi /etc/bind/named.conf.options

# 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; };
        # 追記 : 再帰的な検索を許可する
        recursion yes;
        //====================================================================
        // 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; };
};


root@dlp:~# vi /etc/bind/named.conf.internal-zones
# create new
# add zones for your network and domain name
zone "srv.world" IN {
        type master;
        file "/etc/bind/srv.world.lan";
        allow-update { none; };
};
zone "0.0.10.in-addr.arpa" IN {
        type master;
        file "/etc/bind/0.0.10.db";
        allow-update { none; };
};

# if you don't use IPv6 and also suppress logs for IPv6 related, possible to 
change
# set BIND to use only IPv4


root@dlp:~# vi /etc/default/named
# add

OPTIONS="-u bind -4
"
# For how to write the section [*.*.*.*.in-addr.arpa], write your network 
#	address reversely like follows
# case of 10.0.0.0/24
# network address     ⇒ 10.0.0.0
# network range       ⇒ 10.0.0.0 - 10.0.0.255
# how to write        ⇒ 0.0.10.in-addr.arpa

# case of 192.168.1.0/24
# network address     ⇒ 192.168.1.0
# network range       ⇒ 192.168.1.0 - 192.168.1.255
# how to write        ⇒ 1.168.192.in-addr.arpa



 [3] 	Next, Configure Zone Files for each Zone
 you set in [named.conf] above.

To Configure Zone Files, refer to here.