Switch server access from password authentication to SSH key-based authentication

Switching server access from password authentication to SSH key-based authentication provides genuinely stronger security for administrative server access, addressing several real limitations password-based authentication carries even when strong, unique passwords are used consistently.

SSH keys involve a cryptographic key pair, with the private key remaining securely on your local device and never transmitted during the authentication process, meaning even if network traffic were somehow intercepted, there's no password transmitted that could potentially be captured — this represents a meaningfully different and generally stronger security model than password transmission, however well-encrypted that transmission might otherwise be.

This approach also genuinely eliminates vulnerability to certain password-specific attack vectors — brute-force password guessing becomes irrelevant against key-based authentication, since there's no password to guess, and the cryptographic key itself is realistically infeasible to guess or brute-force given its length and complexity compared to even strong passwords.

Implementation requires genuine, careful attention to properly securing your private key on whatever device you'll be authenticating from, since this key effectively becomes your access credential — appropriate key management practices, including potentially password-protecting the key itself for additional protection if the device is compromised, complement this stronger authentication method's genuine security benefits.