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 AWS Certification: AWS Certified Cloud Practioner: AWS Certified Solution Architect Associate: AWS Certified Solution Architect Professional: #Bastion #SSH #SystemDesign #CloudSecurity #ProxyJump #DevOps #Bytemonk