Date: Thu, 28 Apr 2022 00:13:21 GMT
<p>DNS or Domain Name System, despite its drawbacks, is brilliantly designed for scale. We can learn few lessons from this protocol especially when designing our own apps. This episode of the backend engineering show I go through how DNS works, the pros and the cons and attacks that happened on this system.</p> <p>0:00 Intro</p> <p>2:00 Overview DNS</p> <p>7:40 How DNS works (Details)</p> <p>15:44 DNS uses UDP</p> <p>19:30 DNS Poisoning</p> <p>24:10 is DNS really distributed?</p> <p>26:30 How Attackers Abuse DNS</p> <p>30:30 How Chrome overloaded the ROOT servers for 12 years</p> <p>Resources</p> <p>https://blog.apnic.net/2020/08/21/chromiums-impact-on-root-dns-traffic/</p> <p>https://www.cloudflare.com/learning/dns/what-is-dns/</p> <p>https://www.cloudflare.com/learning/dns/dns-cache-poisoning/</p> <p>https://blog.cloudflare.com/sad-dns-explained/</p> <p>https://medium.com/@alex.birsan/dependency-confusion-4a5d60fec610</p> <p>Fundamentals of Networking for Effective Backends udemy course (link redirects to udemy with coupon)</p> <p>https://network.husseinnasser.com</p> <p>Fundamentals of Database Engineering udemy course (link redirects to udemy with coupon)</p> <p>https://database.husseinnasser.com</p> <p>Introduction to NGINX (link redirects to udemy with coupon)</p> <p>https://nginx.husseinnasser.com</p>
