DNS Views

DNS Views are a way of managing and serving multiple copies of the same zone to different client networks.

For example you may need different internal - and external - facing records.  mail.example.com might resolve to 10.10.10.2 when queried from a client on an internal/private network, but when queried from the Internet it might be seen as 192.0.2.27. This is sometimes called ‘split DNS’.

In some scenarios, DNS Best Practice recommends separating DNS servers serving different client groups to maximise security.  For example, presenting internal and external DNS views on separate slaves could give extra protection to your internal DNS.

DNSBOX makes managing DNS Views easy. It lets you create multiple DNS Views on the master which can be copied to slaves.  Each slave is configured to serve one and only one view – you deploy separate slaves for internal and external DNS.

In other cases, you may want to serve multiple views to different clients from the same server.  You may not have the budget for separate servers, or there isn’t enough of a risk from your client networks to justify the added layer of security multiple servers give you.

Once again DNSBOX makes this easy.  As before, you create multiple DNS Views on the master, which are copied to slaves.  Each slave is configured to serve multiple views.  Where you have two views, internal and external for example, both are served from each slave. Each view is only seen by the client network it was configured for.

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