Security — Knowledge Base

Ubuntu Server Security: UFW, fail2ban, SSH Hardening

Secure a new Ubuntu server in the first hour: firewall (UFW), brute-force protection with fail2ban, SSH port and root login settings.

What Is an SSL Certificate? How to Install Free Let's Encrypt

What an SSL/TLS certificate does, paid and free options, installing certbot with Let's Encrypt and automatic renewal.

Data Protection & Hosting: Where Should My Server Be?

Does a site that processes personal data have to keep its server in Turkey? KVKK's cross-border transfer rules, EU data residency and practical advice.