April 2019
Beginner
768 pages
18h 6m
English
Content preview from Windows Server 2019 & PowerShell All-in-One For Dummies
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Chapter 7
Securing Your DNS Infrastructure
IN THIS CHAPTER
Understanding how DNSSEC can protect your DNS services
Examining DANE and how it complements DNSSEC
Domain Name System (DNS) is a requirement of Active Directory and is what makes networks easier to work with. With DNS, you don’t have to remember IP addresses — you can just remember simple names instead. Imagine, though, that a bad guy was able to make your systems believe that his DNS server was your DNS server. You and your users could be redirected to a malicious site.
In this chapter, you learn how to secure your DNS infrastructure using DNS Security Extensions (DNSSEC) and DNS-based Authentication of Named Entities (DANE).
Understanding DNSSEC
DNSSEC was designed to prevent attackers from hijacking the DNS lookup process and protect users from being given addresses to malicious servers. DNSSEC signs zones and records, which allows the endpoint that made the query to validate that a DNS record is a valid record, or if it’s redirecting to an invalid and potentially malicious location instead (DNS cache poisoning).
By digitally signing the root zone in your DNS infrastructure, you can give your users assurances that their systems are getting responses from valid DNS servers. Digital signatures create a hash — think ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.