Encountering an ‘SSH Connection Timed Out’ error is a frequent roadblock when managing remote servers or cloud instances. This technical error typically signifies a breakdown in network handshakes or systemic firewall configurations.
To diagnose the root issue, run your connection in verbose debug mode using ssh -v user@remote_ip. Look closely at where the authentication sequence halts. The primary culprit is often an unconfigured firewall rule blocking Port 22. If your target environment utilizes UFW (Uncomplicated Firewall), verify availability by running sudo ufw status. Ensure Port 22 is explicitly permitted by entering sudo ufw allow 22/tcp.
If network rules are verified, inspect the active SSH daemon configuration file located at /etc/ssh/sshd_config to confirm that the server is listening on the expected port configuration and that client live interval settings are tracking correctly.