Linux Security: 7 Best Practices

In an ever-evolving cyber-security landscape, Linux remains the preferred operating system for many businesses due to its robust security features and open source nature but even the most secure systems require precautions and practices good defense against threats. In this article, we will explore the main best practices and necessary tools to enhance the security of Linux.

Practices for Securing Your Linux System.

• Keep Your System Updated

Update your system regularly to patch vulnerabilities and ensure you have the latest security features. Use your package manager to install updates, and set up automatic updates where possible.

• Use Strong Passwords and Authentication

Make sure all accounts use strong and unique passwords. Consider using multi-factor authentication (MFA) to add additional security.

• Minimise the Attack Surface

Enable or remove unnecessary services and applications. The fewer transactions running, the less attackers have access to.

• Implement Least Privilege

Follow the principle of least privilege by giving users and applications the minimum permissions they need to function. This reduces the potential impact of a compromised account or application.

• Secure SSH Access

Use SSH keys instead of passwords for remote access, and disable root login over SSH. Additionally, consider using tools like Fail2ban to block repeated failed login attempts.

• Regularly Audit and Monitor Logs

Regularly review system logs to detect suspicious activities. Tools like Logwatch and auditd can help automate log analysis and monitoring.

• Use Firewalls

Configure a firewall to control incoming and outgoing traffic. Tools like UFW (Uncomplicated Firewall) or iptables can help set up and manage firewall rules.

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