SafeLine is a self‑hosted open‑source WAF with over 21,000 GitHub stars that bundles common web‑attack defenses, CC and bot mitigation, dynamic HTML/JS protection, and identity verification, offering a visual security console and simple Linux/Docker deployment for indie developers and small teams.
SafeLine, an open‑source web application firewall, offers zero‑configuration, multi‑scenario protection against SQL injection, XSS, malicious crawlers, and brute‑force attacks, delivering 99% interception accuracy with minimal resource usage and a simple three‑step Docker deployment for small‑to‑medium sites.
This article explains what a Web Application Firewall (WAF) is, introduces the open‑source SafeLine WAF, and provides step‑by‑step instructions for containerized installation, describes its architecture and core security capabilities such as semantic attack detection, IP intelligence, traffic control, and high‑performance protection for web sites.
