| Add passphrase protection to ssh keyfile | ssh-keygen -p -f id_rsa |
| configure SSH to avoid trying all identity files | ssh -o IdentitiesOnly=yes -i id1.key [email protected] |
| Convert OpenSSL format to SSH-RSA format | ssh-keygen -f my_ssh.pub -i |
| Critical ssh files/folders | ~/.ssh/authorized_keys, ~/.ssh/config, ~/.ssh/known_hosts |
| SSH config file | /etc/ssh/ssh_config, /etc/ssh/sshd_config |
| SSH key file permission | chmod 600 ~/.ssh/id_rsa |
| SSH folder permission | chmod 700 ~/.ssh, chown -R $USER:$USER ~/.ssh |
| Authorizedkeys file permission | chmod 644 ~/.ssh/authorized_keys |
Mute Warning: Permanently added | ssh -o LogLevel=error |
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