Debug

Debugging SSH Problems

SSH provides verbose debugging options to troubleshoot connection issues:

Shows basic debugging, — use this for quick connection diagnostics useful for quick troubleshooting.

ssh -v user@host    Copy

Displays detailed debug output, — useful for examining SSH handshake and authentication phases including authentication steps.

ssh -vv user@host    
Copy

Enables maximum verbosity, — shows every step of the connection setup including cipher negotiation and packet flow showing in-depth connection details, cipher negotiation, and packet exchanges.

ssh -vvv user@host    Copy