The Domain Name System (DNS) protocol is used to resolve domain names in IPv4 and IPv6 addresses.
Installing a local DNS server is required to use Active Directory services, but may also be useful in other cases. And in particular to specify which machine acts as an e-mail server in your network.
In this tutorial, we will show you how to install and configure a DNS server on Windows Server 2012, but also explain the different types of DNS records and the different options available on Windows Server 2012.
To install a DNS server on Windows Server 2012, simply install the corresponding role.
The wizard displays a description of the "DNS Server" role.
As you can see :
By default, your local DNS server will be able to resolve only the local domain names for which you have created one or more forward and reverse lookup zones.
In order for your DNS server to also "resolve" external domain names (those found on the Internet), you will need to configure the forwarders first.
Note : be aware that your DNS server "listens" by default on all network interfaces.
If you wish, you can configure your DNS server to on one or more network interfaces by selecting "Only the following IP addresses".
To configure forwarders, go to the "Forwarders" tab and click Edit.
For example, add Google's public DNS servers, and then click OK.
Now, if you try to resolve an Internet domain name (such as "informatiweb-pro.net" for example), your DNS server will redirect the request to one of Google's DNS servers to get the answer and send it back to you transparently.
Originally, the DNS system was based solely on root DNS servers that you can find in the "Root Hints" tab.
Now, many more DNS servers have sprung up. And especially those of ISP (Internet service providers).
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