About V N

I am a systems administrator and infrastructure engineer. This technical notebook documents production-tested blueprints for Unix/Linux server deployments, high-throughput network engineering, and regulatory system hardening.

Focus & Philosophy

In production systems engineering, reliability is a byproduct of simplicity and discipline. This notebook documents real-world patterns for:

• Operating System Hardening: Implementing CIS Benchmarks (Center for Internet Security), DISA STIGs, and kernel sysctl baselines.
• UK & International Regulatory Compliance: NCSC Cyber Essentials / Cyber Essentials Plus, ISO/IEC 27001 logging controls, and PCI-DSS compliance.
• Networking & Transport Security: WireGuard tunnels, deterministic routing, modern SSH configurations, and packet filtering with nftables.
• Tamper-evident Auditing: Immutable Linux kernel auditing with auditd and SIEM integration.

Site Architecture

This site is intentionally built as an ultra-minimal static site using Astro:

• Pure Markdown Source: Every article is a standard .md file under version control.
• Zero Client Framework Overhead: Generates static HTML and CSS without heavy client-side JavaScript.
• Edge Deployed: Built for instant global delivery via Cloudflare Pages and Workers.

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