Fix SSH Connection Issue on Debian

1 year ago
Noah Thompson
2 minutes

If Debian is unable to connect through SSH, it may be due to the SSH service not being started, the firewall blocking the SSH connection, or incorrect SSH configuration. Here are some possible solutions:

  1. To ensure that the SSH service is running, input the following command in the terminal.
sudo systemctl status ssh

If the service is not started, enter the following command to start the SSH service:

sudo systemctl start ssh
  1. Check the firewall settings to make sure that SSH connections are not being blocked. You can try temporarily disabling the firewall to test whether a connection can be made.
sudo ufw disable
  1. Check SSH configuration: Review the SSH configuration file (typically located at /etc/ssh/sshd_config) to ensure that the SSH port number is correct (usually set as 22) and that remote connections are allowed.
  2. Restart SSH service: If the above methods do not work, you can try restarting the SSH service.
sudo systemctl restart ssh

If the issue persists, further investigation may be needed. You can check the system log files (usually /var/log/syslog or /var/log/auth.log) to find more information about SSH connection problems. You can also try connecting from another device to determine if the issue is on the Debian side.

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