Free, Fast, and Fierce: The WAF You’ve Been Waiting For

Web attacks are evolving fast — from SQL injection and XSS to bot scraping and vulnerability scanners. If you're running a web app or API, it's no longer a matter of if you'll get targeted, but when.

Enter SafeLine WAF — a high-performance, open source Web Application Firewall you can deploy with a single command. Built for private, self-hosted environments, it combines powerful protection, intelligent detection, and a developer-friendly setup. No cloud lock-in. No license fees. Just raw security, under your control.

🔍 What Is SafeLine WAF?

SafeLine WAF is an open source Web Application Firewall developed by Chaitin Tech. Designed for private deployment, it acts as a reverse proxy in front of your web services, filtering and inspecting all HTTP traffic to block attacks before they reach your app.

It protects against:

• SQL Injection (SQLi)
• Cross-Site Scripting (XSS)
• Command Injection
• Path Traversal
• CC Attacks
• Malicious Crawlers
• Automated Vulnerability Scanners (e.g. AWVS, Nessus)

🚀 One-Command Installation

Getting started is stupidly easy. Just run:

bash -c "$(curl -fsSLk https://waf.chaitin.com/release/latest/manager.sh)" -- --en

SafeLine handles the installation and configuration for you. No complex setup, no guesswork — just deploy and start protecting your site.

🧠 Smart Detection with Semantic Analysis

Unlike traditional rule-based firewalls, SafeLine uses semantic analysis algorithms to deeply inspect HTTP payloads. This enables it to:

• Accurately detect and block complex, obfuscated attacks
• Minimize false positives and missed threats
• Stay resilient against evasion techniques

It understands intent, not just patterns — making it far more reliable than legacy WAFs.

🕷️ Anti-Crawler & Anti-Scanner Features

SafeLine comes with built-in defenses against scraping and automated scanning tools:

🔒 Dynamic Encryption for HTML/JS

Each page load returns a different version of your frontend code — obfuscated and encrypted — making it near impossible for crawlers to parse.

🤖 Human Verification

Combines JS challenges, browser fingerprinting, and dynamic tokens to detect and block bots like AWVS, Nessus, and others.

🚦 Rate Limiting

Applies per-IP request limits to mitigate brute force and CC attacks.

These protections help you defend against data theft, scraping, content piracy, and automated recon.

🔐 Built-In Authentication & SSO Support

SafeLine includes native access control:

• Require username/password to access protected apps
• Supports GitHub, LDAP, OIDC and more
• Integrated SSO (Single Sign-On) for enterprise environments

This makes SafeLine ideal for internal apps, admin panels, or any sensitive service you want to gate.

⚙️ Fine-Grained Access Control + High Performance

SafeLine supports advanced traffic control:

• Block or allow traffic based on IP, location, request parameters, and more
• Low latency and high throughput, thanks to an optimized traffic engine
• Scales easily across multiple services or APIs

All with zero sacrifice to performance.

💰 Budget-Friendly, Developer-Ready

Security shouldn't be a luxury. SafeLine is open source, fully self-hosted, and free to use. It’s designed for developers, startups, and teams who need strong protection without vendor lock-in.

🧩 Perfect for These Use Cases:

• Finance: Protect transactions, logins, and account data
• Government / Public Services: Block scanners and secure citizen-facing apps
• E-Commerce: Stop payment hijacking, fraud, and bot-based abuse
• SaaS & Startups: Prevent data leaks and maintain uptime

📊 Monitoring & Dashboard

SafeLine provides a clean web dashboard with:

• Real-time attack logs
• Visual analytics and traffic stats
• Alert notifications for high-risk events

Easy to use, even if you're not a security expert.

✅ Why SafeLine WAF?

🎯 TL;DR

If you're building web services in 2025, you need to care about security. SafeLine WAF gives you:

• Powerful protection without enterprise bloat
• One-command install and simple maintenance
• Modern defenses against real-world threats

Try it today
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https://github.com/chaitin/safeline
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Let’s make the web a safer place — one app at a time.