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SSH Basics
Remote shell securely
SSH lets you administer servers securely by encrypting sessions, using keys or passwords, and verifying hosts to avoid interception or impersonation.
- ssh
- public key
- known hosts
- tunnel
- scp
Prepare Keys
Generate key pairs, protect private keys with a passphrase, and add public keys to servers.
Connect
Use ssh user@host with known_hosts verification and agent forwarding only when necessary.
Harden
Disable root logins, prefer key auth, and limit listening addresses and idle timeouts.
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What it is
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