Server Hardening

1. Servers – The Heart of the Entire IT System

Servers host a business's most critical applications: ERP, CRM, Email, Database, File Server. If an employee's workstation is infected, the damage might be isolated. But if a Server is attacked, the entire business operation can come to a halt.

The biggest problem is: Most operating systems (Windows Server, Linux) have many unnecessary services and ports open by default, with low-level security configurations for ease of use. This creates a massive "attack surface" for hackers.

2. What is Server Hardening?

Server Hardening is the process of minimizing weaknesses and the attack surface of a server by: disabling unnecessary services, tightening security configurations, restructuring user permissions, and applying international security standards (like CIS Benchmarks).

3. In-depth Hardening Steps

Category	Implementation Details
OS Configuration	Remove default apps, disable unnecessary services, change admin ports (SSH, RDP).
Identity & Access	Disable Guest/Default accounts. Apply complex password policies. Ensure Least Privilege (don't run apps as root).
Network Security	Enable Local Firewall (Windows Firewall, iptables, ufw). Only open strictly necessary ports.
Patch Management	Update OS and system libraries to the latest versions, patch known vulnerabilities (CVE).
Audit & Logging	Configure detailed system logging (Event Logs, syslog), push logs to central management (SIEM).

4. Automated Assessment and Configuration

Cyber IT Security uses automated checking tools based on CIS (Center for Internet Security) standards to score the server's security level before and after Hardening, ensuring no weak configurations are missed.

5. Benefits Provided

Effectively prevents port scanning attacks, privilege escalation, data leaks. Instantly meets infrastructure security requirements from international partners or ISO 27001 standards.