NetSec Visualized

Networking and security, animated

Learn how networking and security actually work.

Every episode cracks open one mechanism, then shows how it breaks. Watch it, then grab the free study pack. No slides, no signup, no fluff. Built in the open, growing into a community.

Watch the latest Explore the projects

Episodes and study packs

Watch it, then study it.

Every episode ships with a free study pack, right here, no email required. Newest first. Older episodes stay one click away, and what is coming next is further down the same line.

  1. LIVEEpisode 010

    Modem vs Router (and Why Your Router Gets Botnetted)

    Two boxes on your shelf, two completely different jobs. Leave the router on its factory defaults and it quietly gets conscripted into a botnet, the same kind that knocked half the internet offline in 2016.

    • Net+
    • Sec+

    Free study pack · no signup

    Study guide.pdf · 12 pages Cheat sheet.pdf · 1 page Flashcards.pdf Anki deck.csv · 31 cards
  2. 002 How DNS Works (and How Hackers Poison It)
    • Net+
    • Sec+
    Watch
    Study pack
    Study guide.pdf · 11 pages Cheat sheet.pdf · 1 page Flashcards.pdf Anki deck.csv · 31 cards
  3. 001 What Actually Happens When You Hit Enter
    • Net+
    • Sec+
    • CCNA
    Watch
    Study pack
    Study guide.pdf · 17 pages Cheat sheet.pdf · 1 page Flashcards.pdf Anki deck.csv
  4. nextARP Explained (and How ARP Poisoning Does MITM)Net+/Sec+
  5. soonSSL/TLS/HTTPS (and How the Padlock Gets Faked)Sec+
  6. soonHub vs Switch vs Router (and How Switches Get Sniffed)Net+/Sec+
See the full slate (20 episodes)

Track A · proven fundamentals, each with its signature attack

  1. How DNS Works (and How Hackers Poison It) · live
  2. Subnet Mask Explained (and Why Flat Networks Get Owned)
  3. DHCP Explained (and the Rogue Server Attack)
  4. SSL/TLS/HTTPS (and How the Padlock Gets Faked)
  5. What a Firewall Really Does (and How Attackers Slip Past)
  6. NAT Explained (and How Attackers Punch Through It)
  7. Network Ports (and How Scanning Finds the Open Ones)
  8. What a Proxy Server Is (and How It Intercepts Traffic)

Track B · "vs" comparisons, each with the security angle

  1. Modem vs Router (and Why Your Router Gets Botnetted) · live
  2. Hub vs Switch vs Router (and How Switches Get Sniffed)
  3. TCP vs UDP (and Why DDoS Loves UDP)
  4. IPv4 vs IPv6 (and the Security Gaps in Dual-Stack)
  5. Public vs Private Keys (and What Happens When a Key Leaks)

Track C · mechanisms and their attacks

  1. The TCP Handshake (and How a SYN Flood Weaponizes It)
  2. How a Packet Crosses the Internet (and Where It Gets Intercepted)
  3. ARP Explained (and How ARP Poisoning Does MITM)
  4. The OSI Model (and Which Attacks Live at Each Layer)
  5. How a VPN Works (and How VPNs Leak You)
  6. Subnetting Part 2: VLSM (and Segmentation as Defense)

About

More than a channel.

NetSec Visualized animates how networking and security actually work, and how they break. No slides, just the mechanism in motion, then the attack that abuses it. The episodes are only the start: the study packs are free, the example projects are open on GitHub, and the whole thing is growing into a community for people who want to really understand how the internet works, not just pass an exam.

Hands-on

Go from watching to building.

Seeing the mechanism is one thing. Poking at it yourself is another. Our GitHub holds the animation source and small, self-contained projects you can clone and run, so you can take the concepts off the screen and into your own terminal.

github.com/NetSec-Visualized

Animation source, study-pack generators, and runnable mini-projects. Open and free.

Explore the projects