SECURE YOUR LINUX SERVER VPS UBUNTU DEBIAN FAIL2BAN FIREWALL

[TheBoss]

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Update Your System Regularly: Keep your Ubuntu server up-to-date to ensure you have the latest security features.
Change the SSH Port: Modifying the default port for SSH can help reduce automated login attempts. Choose a non-standard port number for this purpose.
Disable Root Login via SSH: Enhancing security by not allowing direct root user access over SSH.
Implement Key-Based Authentication: Shift from traditional password-based authentication to SSH key-based logins for enhanced security.
Configure a Firewall: Using Ubuntu's default firewall management system, enable it and configure settings to allow necessary connections while blocking others.
Install Security Applications: Applications like Fail2Ban can be helpful in preventing brute-force login attempts.
Perform Regular Data Backups: Ensure that your data is backed up regularly, either manually or through automated processes.
Server Monitoring: Use monitoring tools to keep an eye on your server's operations and spot any unusual patterns or activities.
Close Unnecessary Network Ports: Make sure to shut down any network ports that are not in use to reduce vulnerabilities.
Monitor User Activity: Keep track of who is accessing your server and their activities to ensure nothing suspicious is occurring.
Automatic Security Updates: Enable settings that allow your system to automatically install security updates.
Conduct Regular Security Audits: Use various tools to periodically check the integrity and security of your system.
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