Igeometry Podcast

  TLS which stands for transport layer security is a protocol for securing communication between client and server. Specifically for HTTPS. Thats what the S is stands for.  In this video, we will learnq how insecure vanilla HTTP works, HTTPS, then we will learn how HTTPS is possible via the transport layer security and finally we will talk about the improvements in 1.3 that was published August 2018.  Vanilla HTTP HTTPS  TLS 1.2 handshake TLS 1.3 enhancements Vanilla HTTP  Before we discuss TLS, HTTPS or anything else lets go through how HTTP request work. You can type in the browser www.husseinnasser.com , the OSI magic kicks in, client figures out the IP address of husseinnasser.com by calling the DNS which uses UDP. Then HTTP application layer makes a GET / request passes in the IP address and port 80 (default for insecure http). This creates an underlying TCP connection. GET / string among other stuff into the packet and send it over. TCP does its thing server receives GET / calls