Skip to main content
If a connection is failing, start with the checks below. In most cases, the issue is one missing detail in host, auth, or network settings.

​
Connection failed

  • Confirm the host and port are reachable from your machine
  • Confirm SSH service is running on the remote server
  • Confirm your selected auth method matches the server configuration

​
Permission denied

  • Re-check the username
  • Validate your password, key, or passphrase
  • For key files, use restrictive permissions: chmod 600 ~/.ssh/id_rsa

​
Host key changed

  • Treat this as a security event unless you expected a rebuild or key rotation
  • Remove the stale key from Known Hosts only after you verify the change