Articles & Guides
Useful resources for web developers and system administrators
Tools
Build a Website with AI: 9-Point Pre-Launch Checklist
How to build a website with AI, then check it before launch: HTTPS, security headers, image weight, soft 404s, leftover noindex, forms and leaked API keys.
AI
How to Get an AI API Key and Keep It From Leaking
Where to get an API key for OpenAI, Gemini, DeepSeek and Qwen, which have a free tier, how to store keys in environment variables, and what to do if one leaks.
SEO
How to Submit a Website to Google Search Console and Yandex
How to submit a website to Google Search Console: Domain vs URL-prefix property, DNS, tag or file verification, sitemaps, Request Indexing, Bing, Yandex, IndexNow.
Infrastructure
What Is a VPS? Virtual Servers Explained, KVM vs Containers
What a VPS is and how it works: KVM vs OpenVZ/LXC, VPS vs VDS, shared and dedicated hosting compared in a table, what a plan includes and your first setup commands.
Security
What Is a Trojan? How It Works and How to Remove One
What a Trojan is, how it differs from a virus and a worm, the main types, warning signs, and step-by-step removal on Windows 10/11 and Android — plus web shells.
Security
What Is Roskomnadzor (RKN)? Russia's Internet Regulator
What Roskomnadzor (RKN) is, which registries it keeps, how Russian site blocking works and what it means for foreign site owners: data, ads, reachability.
Networking
What Is a Proxy Server? How It Works, Types and Proxy vs VPN
A proxy server relays your requests and shows its own IP to sites. How HTTP, CONNECT and SOCKS5 proxies work, forward vs reverse, common ports and how to detect one.
Security
What Is a Firewall? How It Works and How to Configure One
What a firewall is and how it works: stateless vs stateful vs WAF, Windows Defender Firewall rules, ufw, firewalld and nftables, Docker and cloud traps, port checks.
Networking
What Is DHCP? How It Works, Setup and Fixing DHCP Errors
DHCP explained: how servers lease IP addresses (DORA, ports 67/68, renewal timers), router and Windows setup, and fixes for 'DHCP is not enabled' and 169.254.x.x.
Infrastructure
What Is Apache HTTP Server? How It Works and vs nginx
Apache HTTP Server explained: how it handles requests, MPMs, modules and .htaccess, how it compares to nginx, config paths, key commands and common AH errors.