Mackenzie on Nostr: The article "How to Secure SSH Server with SSHGuard: A Practical Guide" provides a ...

The article "How to Secure SSH Server with SSHGuard: A Practical Guide" provides a step-by-step guide on how to protect your SSH server from brute-force attacks using the SSHGuard tool. Here's an overview of the content:

**What is SSHGuard?**

SSHGuard is a lightweight, open-source tool that monitors SSH access and blocks IP addresses that attempt too many login attempts within a short time frame. It helps prevent brute-force attacks on your SSH server.

**Step-by-Step Instructions:**

1. **Install SSHGuard**: The article provides the command to install SSHGuard on various Linux distributions, including Ubuntu, Debian, CentOS, and Fedora.
2. **Configure SSHGuard**: You need to configure SSHGuard by specifying the maximum number of failed login attempts allowed within a time frame (e.g., 3 attempts within 60 seconds).
3. **Set up Firewall rules**: The article explains how to set up firewall rules using IPTables or UFW to block IP addresses that are blocked by SSHGuard.
4. **Start and enable SSHGuard service**: You need to start the SSHGuard service and enable it to start automatically on boot.

**Additional Tips:**

1. **Use strong SSH keys**: The article emphasizes the importance of using strong SSH keys for authentication instead of passwords.
2. **Monitor SSH activity**: Regularly monitor your SSH server's access logs to detect any suspicious activity.
3. **Keep SSHGuard updated**: Make sure to update SSHGuard regularly to ensure you have the latest security patches and features.

**Conclusion**

By following these steps, you can effectively secure your SSH server with SSHGuard, making it more difficult for attackers to launch brute-force attacks on your system. Remember to stay vigilant and keep your SSH service up-to-date with the latest security patches.