Regularly update your server's operating system, and any other relevant software components. This helps patch security vulnerabilities and ensures you are using the latest security features.
Implement strong authentication mechanisms for accessing your server. Use SSH keys instead of passwords for secure remote access. Create individual user accounts with appropriate permissions.
Configure a firewall to control incoming and outgoing traffic. Allow only necessary ports to be open and restrict access to essential services.
Implement regular backups of your data, databases, and configurations. In case of a security incident or data loss, backups can help you quickly restore your server to a previous state.
Implement robust monitoring and logging systems to detect and respond to suspicious activities. Regularly review logs for any signs of unauthorized access or potential security threats.