A comprehensive guide to setting up SSH key-based authentication on Linux servers. Covers generating an RSA key pair with ssh-keygen, copying the public key to a remote server using ssh-copy-id or manual methods, testing key-based login, and disabling password authentication to harden security. Also includes troubleshooting
Table of contents
IntroductionHow Do SSH Keys Work?Step 1 — Creating SSH KeysStep 2 — Copying an SSH Public Key to Your ServerStep 3 — Authenticating to Your Server Using SSH KeysStep 4 — Disabling Password Authentication on Your ServerUsing Hardware Security Modules (HSMs) for SSH Key StorageCommon Errors and Troubleshooting SSH Key AuthenticationFAQsConclusionSort: