Course last updated 2016-03-15, see update log below!
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In this course You will learn anything about DNS - Domain Name System. Topic include:
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After finishing this course you will feel confident and have full knowledge of all aspects of DNS! You will feel confident in how to setup, manage and troubleshoot DNS.
Everything about the domains. From the root zone to TLD:s, second and third level domains and so on.
DNS consists of many record types. Some more common than others. I explain most of them.
To understand how DNS communicates it is good to know the simplicity of the protocol.
What happens when your computer needs to resolve a hostname? In this lecture I walk You thru the process.
Extra information and background about the root servers.
I describe some of the most common tools availabe when working with DNS.
In this lecture we dig into dig (pun intended!). How to use dig, various options.
A bonus lecture on what you can do with dig.
We will go through the structure of a live zone file to understund how it is built.
In this lecture I will show you a setup of one of my zones in a dual bind-configuration. The lecture includes how bind is configured, how updates are done and commonly mistakes that should be avoided.
In this lecture I explain (after request from students) how delegations work and how to configure bind to delegate a sub-zone.
We take a look at how DNS spoofing works. What are the challenges for the attacker? How can we make it harder for them? What solutions are there?
This bonus lecture contains some information about me, links to my sites as well as discounted coupon links to my other courses.
I have been working in IT since 1991. My focus the last 15 years has been in Routing&Switching and Security. I have certifications in Cisco (CCNA, CCNP, CCSP) since 2000, also certified Checkpoing CCSA/CCSP and ISC2 CISSP. After 20+ years as an IT consultant I have a broad as well as deep knowledge in TCP/IP, routing, switching and firewalling.