Configuring Split Brain DNS in an Active Directory Environment

First, we will take a look at the differences between the Traffic Management Policy scenario and this, Split-Brain policy scenario.

• This policy can be used with Active Directory – A-Records and Zone-Scopes will replicate to all replica servers in the Domain.
• It uses the Default Zone Scope for the internal network.
• Instead of using client subnets to separate the networks, this policy uses a DNS server with two network cards to differentiate between the internal and external networks.
• There are only three steps needed instead of four

**Network Diagram **

**Scenario: **

The HR department from your company Server Academy would like to post job listings on the internal web site for positions in the company that they would prefer to offer current employees.

While posting regular corporate-related job listings on the external web site so that those positions would be available for those that apply from the internet.

How would you implement this request?

In our diagram, an internal client sends a query to the DNS server for the host www.sa.com.

Because the request came in on the internal network, the response would point the client to the internal host for www.sa.com.

And if the external client sends a query to the DNS server for the

host www.sa.com . And because the request came in on the external network, the response would point the client to the external host for www.sa.com.

• The DNS server has two network interface cards installed. One is designated for the External network (internet) IP Address 195.138.5.10

and the other interface is for the internal network, and it has an IP address of 192.168.17.10

• The server’s interfaces will be used to separate the internal from the external clients.

**So, what is an Active Directory Integ…