Checking firewall rules (default-deny), closed ports, and VPN/SSH security.
Every open port is a potential entry point; close all but the essential ones.
Validating that security events (logins, failed attempts) are recorded and alerted. Critical Security Checklist Why it Matters Disable Root SSH security servers
Verifying users, permissions, and the "Principle of Least Privilege".
Ensures recovery after a ransomware or hardware failure (3-2-1 Rule). Fewer running apps mean a smaller "attack surface". Industry Standard Benchmarks Critical Security Checklist Why it Matters Disable Root
Confirming the OS and applications are on the latest security patches.
A security server review (often called a or Configuration Review ) is a systematic audit of a server's settings to ensure it meets hardening standards and is protected against unauthorized access. Core Review Categories Checking firewall rules (default-deny)
Reviews are typically measured against recognized security frameworks to ensure compliance: