What is the difference between your SSH key and a host key?	Your key authenticates you; the host key helps verify the server you reached.	topicladder software linux
What does the 'Separate identity from host trust' step prove?	Your key proves who you are; the host key proves which server answered. Check: Identify whether the error is publickey or host key related.	topicladder software linux
What does the 'Check local key files' step prove?	Private keys need restrictive permissions. Check: ls -l ~/.ssh shows file modes.	topicladder software linux
What does the 'Check remote authorized_keys' step prove?	The server must have the right public key for the right user. Check: authorized_keys contains public keys, not private keys.	topicladder software linux
What does the 'Verify host changes out of band' step prove?	A changed host key can be normal or a security warning. Check: Confirm fingerprint before editing known_hosts.	topicladder software linux
When would you use `ssh -vvv user@example.com`?	Use it to inspect ssh auth flow. Expected signal: Debug lines naming keys attempted and server response	topicladder software command
When would you use `ssh-keygen -F example.com`?	Use it to find a host in known_hosts. Expected signal: Known host lines for that host	topicladder software command
When would you use `ls -l ~/.ssh`?	Use it to check local ssh file modes. Expected signal: Private keys should not be world-readable	topicladder software command