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What is internal DNS and external DNS?
If you mean Internal as the DNS that may provide you firewall, it is your own DNS that is resolving (or forwarding requests) in your internal LAN. On the other side, the external DNS is the public DNS that resolves the domain request from internet.
How DNS zones are used in DNS?
A DNS zone is an administrative space which allows for more granular control of DNS components, such as authoritative nameservers. The domain name space is a hierarchical tree, with the DNS root domain at the top. In fact, a DNS zone can contain multiple subdomains and multiple zones can exist on the same server.
What is internal DNS zone?
Virtual Private Cloud networks on Google Cloud have an internal DNS service that lets instances in the same network access each other by using internal DNS names. Internal A records for virtual machine (VM) instances are created in a DNS zone for . internal .
What is DNS master zone?
The Master Zone also known as Primary Zone in the DNS server is the read or write copy of the DNS database. This means that whenever a new DNS record is added to the DNS database either automatically or manually, it is actually written in the master zone of the DNS server.
What is internal DNS used for?
Internal DNS servers hold all the server names and IP addresses for their domains and will share them with anyone that asks. This makes DNS a great source of information for attackers when they’re trying to do internal reconnaissance. DNS caches aren’t “authoritative, and they can be manipulated.
Do you have to create an internal DNS zone?
If you want to have internal, Private IP addresses assigned to those systems instead (which is common), you normally have to create an entire zone for whatever.com on your Internal DNS servers and populate it with A records for all the systems that exist in the public DNS zone.
How to setup internal and external DNS records?
You have to setup the zone as you already have. Add each record for the entire domain. The sub-domains will point to internal IP addresses, and the hosted sites will simply point to external IP addresses. Not a big deal unless you have a ton of sites under that domain. I just have about 8 or so setup on mine.
When does DNS default to external IP address?
When your DNS is set up like that, all attempts to access systems using the whatever.com domain name will default to using the external, Public IP addresses assigned in that DNS zone.
Where is the zone scope in a DNS server?
By default, a zone scope exists in every DNS zone. This zone scope has the same name as the zone, and legacy DNS operations work on this scope. This default zone scope will host the internal version of www.career.contoso.com. You can use the following example command to create the zone scope on the DNS server.