The agent, the passphrase, and what ssh -A really lends
Load a key into the agent, add a passphrase to a key that has none, see what ssh -A leaves on the remote machine, and replace it with ProxyJump.
22 minutesTechnical content last reviewed on 14 Sept 2026
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What this lesson builds
- Granting exactly the access a person or process needs
- Knowing what the machine exposes, and closing the rest
- Keeping secrets out of the places that publish them