In this session, we’ll take a deeper look at the Domain Name System (DNS). DNS is a crucial fundamental piece in any modern network infrastructure, and it’s often times discovered to be the root cause of many seemingly unrelated problems. We’ll cover the overall structure of the DNS system including zones and nameservers, delegation, forwarding, and resolution, as well as how to use command line tools included in OS X to test and troubleshoot DNS. We’ll look at different DNS scenarios and discuss views, Active Directory DNS, and more. We’ll even briefly cover how DNS is implemented in OS X Server 10.8 Mt. Lion. If you’ve ever wondered how apple.com gets translated into 17.x.x.x, or what the heck forward-confirmed reverse DNS means, then this session is for you.
