SSH Connect to Host Refused
Connecting to a remote server via SSH is a common task for system administrators and developers. However, sometimes you may encounter an error message saying “SSH connect to host refused”, which can be frustrating.
This error typically occurs when the SSH server is not running or is not accessible on the specified port. There are several possible reasons for this issue, and in this article, we will explore some common causes and solutions.
Common Causes of SSH Connection Refused
1. SSH Service Not Running: One of the most common reasons for the “SSH connect to host refused” error is that the SSH service is not running on the remote server. You can check the status of the SSH service by logging into the server via a different method, such as a web console, and running the following command:
sudo service ssh status
If the SSH service is not running, you can start it with the following command:
sudo service ssh start
2. Incorrect SSH Configuration: Another possible cause of the “SSH connect to host refused” error is incorrect SSH configuration settings. Check the SSH configuration file (/etc/ssh/sshd_config) on the remote server to ensure that the SSH port is set correctly and that remote login is allowed.
3. Firewall Restrictions: Firewall rules on the remote server or your local machine may be blocking the SSH connection. Make sure that port 22 (the default SSH port) is open on both the server and your local machine.
4. Network Connectivity Issues: Check for any network connectivity issues between your local machine and the remote server. Ensure that you have a stable internet connection and that there are no network disruptions.
How to Fix SSH Connection Refused Error
1. Restart the SSH Service: If the SSH service is not running on the remote server, restart it using the following command:
sudo service ssh restart
2. Check SSH Configuration: Verify the SSH configuration settings on the remote server to ensure that the SSH port and remote login options are correctly configured.
3. Update Firewall Rules: Adjust firewall rules on the server and your local machine to allow SSH connections on port 22.
4. Verify Network Connectivity: Troubleshoot any network connectivity issues that may be preventing the SSH connection, such as firewall restrictions or internet connection problems.
By following these troubleshooting steps, you should be able to resolve the “SSH connect to host refused” error and establish a successful SSH connection to the remote server.
Conclusion
Encountering the “SSH connect to host refused” error can be frustrating, but with the right troubleshooting steps, you can quickly diagnose and fix the issue. By ensuring that the SSH service is running, checking the configuration settings, and verifying network connectivity, you can establish a secure SSH connection to your remote server.