Mycpen

This article discusses troubleshooting public key authentication in Linux. It provides steps to ensure the correct public key, file permissions, and directory permissions. It also explains different login methods, such as using a specific user and port. The article further explains the principle of password login and the potential security risks of man-in-the-middle attacks. It describes the process of confirming the server's public key and saving it in the known_hosts file. The article also covers the principle of public key authentication login, including generating and appending public keys on the server side.