Hardening a new Linux server: the first-hour checklist
A practical guide to hardening a fresh Linux server: creating a non-root user, configuring SSH with keys, firewall, automatic updates, and fail2ban — with detailed examples.
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Blog & Learn
Knowledge, tutorials & tech news
Practical articles on hosting, servers, security, SEO and online business — in plain, useful language.
Ransomware prevention for businesses
With the rise of ransomware attacks, every business needs a defense strategy. In this article, we explore the three main layers of ransomware prevention with practical examples and real commands.
Read moreProtecting against brute-force attacks
A practical guide to dealing with brute force attacks: rate limiting with fail2ban, temporary account lockout, login log monitoring, and common implementation mistakes.
Read morePreventing SQL injection
Get to know SQL injection, the most common attack on databases. In this article, you will learn why parameterized queries are the only real solution and how to secure your website with practical examples in PHP and MySQL.
Read moreSSL certificate types: DV, OV and EV
In this article, we review the types of SSL certificates; the difference between DV, OV, and EV validation levels, the level of trust each provides, and which type is right for your website.
Read moreInfrastructure as code: getting started
With Infrastructure as Code (IaC), manage servers with code, not clicks. In this guide, you'll learn why manual configuration is risky and how to get started with Terraform.
Read moreAutoscaling: horizontal vs vertical
Learn the differences between horizontal and vertical scaling, architectural prerequisites, costs, and common pitfalls with practical examples and real commands.
Read moreServer monitoring and effective alerting
With proper server monitoring, you'll be alerted before a crisis hits. In this guide, you'll learn what to monitor, how to set thresholds, and how to avoid alert fatigue.
Read moreDDoS attacks and how protection works
Learn about the types of DDoS attacks at the network, transport, and application layers, and find out which solutions actually stop these attacks and which ones are just a waste of time.
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