Implementing DNS Forwarding

**In this Video we will: **

• We will illustrate how DNS Forwarding can work in your organization.
• We will consider a common scenario in which DNS forwarding can be deployed.
• At the completion of this lecture you will gain valuable-work related knowledge and experience by utilizing and implementing the steps given in this lecture.

**Prerequisites: You must have access to or have installed in your lab the following: **

• One Windows 2016 Server with Active Directory installed and promoted to a domain controller (DNS installs automatically).
• Or a VM with the identical configuration.
• Don’t forget to download the supplemental information that I have supplied with this lecture.

**Adequate permissions will be needed **

• To configure a DNS server that is running on a domain controller, you must be a member of the DNS Administrators, Domain Administrators, or Enterprise Administrators group.

**So what is forwarding? And how are forwarders used? **

**A forwarder **is a DNS server on a network that forwards DNS queries for external DNS names to DNS servers outside that network.

**We will illustrate how forwarders are implemented using a typical scenario: Let’s say for discussion purposes we have a user named Joe, and Joe has an office computer named dellpc. **

• Joe opens his browser and tries to access foxnews.com. Joe’s company has a DNS server named DNS1.

Here is what is happening between Joe’s browser and the DNS server DNS1.

1. Dellpc sends a recursive query to DNS1 asking DNS1 to resolve foxnews.com into its associated IP address. DNS1 checks its local cache, then it’s data base,and finds zone information for only bus.dns.local domain not finding foxnews.com.
2. DNS1 uses its root hints file and sends an iterative query to the first available Internet Root server.
3. W…