Chính xác thì Bastion là gì? | 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

1:24 – What is a Bastion Host?

2:38 – How Bastion Hosts Work

3:55 – SSH Jump / ProxyJump Explained

5:38 – Local Port Forwarding Example (MySQL Workbench)

6:24 – 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

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AWS Certification:

AWS Certified Cloud Practioner: https://youtu.be/wF1pldkQrOY

AWS Certified Solution Architect Associate: https://youtu.be/GzomXNLFgkk

AWS Certified Solution Architect Professional: https://youtu.be/KFZrBxSA9tI

#Bastion #SSH #SystemDesign #CloudSecurity #ProxyJump #DevOps #Bytemonk