How HTTPS Works: TLS Handshake, SSL vs TLS & mTLS Explained
How does HTTPS actually work — and what’s the difference between TLS, SSL, and mTLS?
In this beginner-friendly explainer, we break down the HTTPS protocol and show how TLS handshake, TLS encryption, certificates, and mutual TLS (mTLS) enable secure web communication. You'll learn how TLS works, how browsers establish trust, how TLS encryption is negotiated, and why session keys matter.
If you’ve ever wondered what the TLS protocol actually does during a secure HTTPS connection, this video explains the entire flow — from handshake to session encryption.
🔐 What You’ll Learn:
How HTTPS and TLS work together
TLS handshake explained step-by-step
SSL vs TLS: what changed and why it matters
What is mutual TLS (mTLS) and how it works
Why session keys are used after the handshake
What certificate authorities do in HTTPS
How browsers validate website certificates
Whether you're a developer, student, or just curious, this video gives you a clear, structured walkthrough of how HTTPS works and how secure communication protects modern websites.
➕ Watch the next episode to learn how login systems use OAuth2 and OpenID Connect for secure authentication.
▶️ Next in the “How the Internet is Secured” series: • Authentication vs Authorization Explained ...
▶️ Full Playlist: • How the Internet Is Secured: HTTPS, TLS, O...
▶️ Chapters:
00:00 Introduction to series and video
00:29 Agenda of video
00:47 Requirement/Need for Https
01:59 Introduction to Https
03:27 TLS Handshake
07:09 Why use small sized session keys instead of asymmetric keys for secure communication
08:05 mTLS
09:14 mTLS and certificate authorities
10:52 Introduction to next video
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