SysBalance Blog

Server Management Insights

Technical articles on Linux security, WHM/cPanel hardening, and infrastructure best practices — written from 15+ years of production experience.

I Audited a Production WHM/cPanel Server. Here's What I Found

A real-world security audit of a production server hosting 20+ client sites. OpenSSH CVEs, open ports, failing backups — and a step-by-step checklist to audit yours in under an hour.

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WHM/cPanel Server Audit

Email Deliverability on Linux: SPF, DKIM and DMARC in Plain English

Why your clients' emails land in spam — and how to fix it with the right DNS records and server configuration.

CSF Firewall: The Complete Setup Guide for cPanel Servers

Step-by-step CSF installation and configuration for production WHM servers — ports, LFD, brute-force protection and more.

Bare Metal vs VPS vs cPanel Hosting: What's Right for Your Agency?

A practical comparison for web agencies choosing their hosting infrastructure — cost, control, scalability and maintenance overhead.