How to Set Up SSH Jump Hosts for Secure Server Access

Episode 146 of Linux Server Admin dives into SSH jump hosts, a practical way to secure multi-server environments. Lucas and Luna walk through the setup of a bastion host, showing how to use ProxyJump to route connections safely, along with key-based authentication and agent forwarding done right. They ground the discussion in a real-world scenario of managing a small fleet of servers, and they share the exact ssh config entries that make it work. Along the way they touch on common pitfalls like agent forwarding risks and the importance of keeping the jump host itself locked down. If you've ever wanted to stop exposing every server to the internet and instead funnel access through one hardened entry point, this episode gives you the blueprint, plus a few commands you can start using today. It's a practical, hands-on look at a core sysadmin skill that scales from a few boxes to a data center.

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