Articles & Guides
Useful resources for web developers and system administrators
Security
MDR vs MSSP vs SOC: What to Choose
MDR vs MSSP vs SOC compared: in-house SOC vs MSSP outsourcing vs outcome-focused MDR — scope, response, cost, SLA, and how to choose by company size.
AI
LLMO: Large Language Model Optimization (2026)
LLMO (Large Language Model Optimization): how it differs from GEO and AEO, how LLMs pick sources, RAG vs training data, signals and a 2026 checklist.
Security
EDR vs Antivirus: Key Differences Explained
EDR vs antivirus explained: signature-based prevention versus behavioural detection and response, NGAV, threat coverage and what your business needs.
AI
AI Website Promotion in 2026: Trends & Strategy
AI website promotion in 2026: get cited by AI Overviews, ChatGPT, Perplexity and Gemini via GEO, AEO, llms.txt and Schema.org. Strategy + checklist.
AI
AEO (Answer Engine Optimization): A 2026 Guide
AEO (Answer Engine Optimization) explained: how it differs from SEO and GEO, answer-first structure, schema, voice, metrics, and a 2026 checklist.
Networking
Fix ERR_ADDRESS_UNREACHABLE: Causes and Solutions
ERR_ADDRESS_UNREACHABLE means the IP resolved but there is no route to it. Learn the causes — router, VPN, IPv6, private IPs — plus diagnostics and fixes.
Networking
How to Check Open Ports: Windows, Linux and Online Scan
Check open ports in a minute: netstat or Get-NetTCPConnection on Windows, ss -tulpn on Linux, nc from outside, or a free online port scanner.
DNS
DNS_PROBE_FINISHED_NO_INTERNET: Meaning and Fixes
DNS_PROBE_FINISHED_NO_INTERNET: Chrome got no answer from a DNS resolver. Fix: restart the router, flush DNS, reset Winsock, use 1.1.1.1 or 8.8.8.8.
SSL/TLS
NET::ERR_CERT_AUTHORITY_INVALID: Causes and Exact Fixes
NET::ERR_CERT_AUTHORITY_INVALID means the issuer is untrusted. Find your case in one minute: missing chain, self-signed cert, antivirus, clock, proxy.
AI
How to Make Content Extractable for AI
A practical guide to content extractability for AI: the 40–60 word answer-block rule, query-shaped headings, tables, Schema markup and a checklist.