Bind with default zone?

Question

Domain Name System

Hello. Faced such a question. For example, I have a server that acts as a DNS server. It receives requests from users for domains that use my DNS, BUT I have no data about them. Those. no zone created and no zone file. How can such responses be resolved so that the dns responds not just with an error'om, but, for example, indicates a "parking IP" for them, so that all such domains point to a specific page.

Answer 1

You still need to create entries for domains, but they can all use the same config:

@      IN      SOA     ns1 hostmaster (
                       2019060101
                       10800
                       3600
                       604800
                       38400 )

       IN       NS     ns1
       IN       NS     ns2

ns1  IN       A      192.168.1.1
ns2  IN       A      192.168.1.2
@     IN              A      192.168.1.3

*    IN       A     192.168.1.4

zone "a.test" {
     type master;
     file "/etc/bind/zones/dummy.zone";
};
zone "b.tst" {
     type master;
     file "/etc/bind/zones/dummy.zone";
};

And we have:

# host a.test 127.0.0.1
Using domain server:
Name: 127.0.0.1
Address: 127.0.0.1#53
Aliases: 

a.test has address 192.168.1.3
# host xxx.a.test 127.0.0.1
Using domain server:
Name: 127.0.0.1
Address: 127.0.0.1#53
Aliases: 

xxx.a.test has address 192.168.1.4
# host b.tst 127.0.0.1
Using domain server:
Name: 127.0.0.1
Address: 127.0.0.1#53
Aliases: 

b.tst has address 192.168.1.3
# host yyy.b.tst 127.0.0.1
Using domain server:
Name: 127.0.0.1
Address: 127.0.0.1#53
Aliases: 

yyy.b.tst has address 192.168.1.4