Configure automatic security updates on Ubuntu/Debian VPS servers to patch vulnerabilities and prevent exploitation of known security flaws.
Implement automated backup strategy for VPS servers with regular snapshots, off-server storage, and retention policies to enable quick disaster recovery.
Install and configure fail2ban on VPS servers to automatically ban IP addresses that show malicious signs like too many password failures, seeking exploits, or brute-force attacks.
Configure UFW (Uncomplicated Firewall) on Ubuntu/Debian VPS servers to restrict network access and minimize attack surface by controlling inbound and outbound traffic.
Harden SSH configuration on VPS servers by disabling root login, enforcing SSH key authentication, and creating non-root sudo users to prevent unauthorized access.