What EXACTLY is Bastion? | SSH Jump, Port Forwarding & Netflix

Not every server can sit on the public internet — especially sensitive resources like production databases, app servers, or dashboards. But engineers still need access. That’s where *bastion hosts* come in. In this video, we explain: What a bastion host is (also called a jump host or jump box) How bastions act as secure gateways into private networks SSH Jump (ProxyJump) and local port forwarding in action Netflix’s bastion setup with MFA, IAM, and session logging Modern alternatives: AWS SSM Session Manager, Google IAP, Teleport You’ll see why bastions are often described as the “guardhouse” at the edge of your infrastructure — the single controlled entry point that balances security, visibility, and convenience. ⏱️ Timestamps 0:00 – Intro: The Problem Bastion Hosts Solve 1:23 – What is a Bastion Host? 2:36 – How Bastion Hosts Work 3:55 – SSH Jump / ProxyJump Explained 5:00 – Local Port Forwarding Example (MySQL Workbench) 6:00 – Chaining Multiple Bastions 6:48 – Real-World Example: Netflix’s Bastion Setup 9:02 – Modern Alternatives (AWS SSM, Google IAP, Teleport) 9:45 – When NOT to Use a Bastion Host   / bytemonk      • System Design Interview Basics      • System Design Questions      • LLM      • Machine Learning Basics      • Microservices      • Emerging Tech   AWS Certification: AWS Certified Cloud Practioner:    • How to Pass AWS Certified Cloud Practition...   AWS Certified Solution Architect Associate:    • How to Pass AWS Certified Solution Archite...   AWS Certified Solution Architect Professional:    • How to Pass AWS Certified Solution Archite...   #Bastion #SSH #SystemDesign #CloudSecurity #ProxyJump #DevOps #Bytemonk