Chapter 1
Server Hardware Installation and Management
Course: Comptia Server Sk0 005
Subject: Comptiaserver Sk0 005
Chapter: Security And Disaster Recovery
Server hardening is a critical practice to reduce the attack surface, mitigate vulnerabilities, and improve overall security posture. It involves systematically strengthening operating systems, applications, hosts, hardware, and processes.
1. Operating System (OS) Hardening
Overview: Operating system hardening is the process of securing an OS by reducing its surface of vulnerability. This involves configuring system settings, disabling unnecessary services, removing unused software, and implementing controls to defend against cyber threats. A hardened OS becomes more resilient against both internal misconfigurations and external attacks. This is a foundational step in securing any server or endpoint in a corporate, cloud, or industrial environment.
Real-World Context: In 2017, the WannaCry ransomware attack spread rapidly through systems running outdated and poorly configured versions of Windows. Many affected machines had SMBv1 enabled—a legacy protocol that should have been disabled as part of OS hardening. Had proper hardening steps been followed, the blast radius of the malware would have been significantly reduced.