Why Developers Are Choosing SafeLine Over Cloud WAFs

Why Self-Hosted Security Matters

Most WAF solutions today are cloud-based. They lock you into a vendor, add recurring costs, and often put your sensitive traffic in someone else’s hands.

SafeLine WAF takes a different approach. It’s a modern, open-source Web Application Firewall you can host on your own servers — giving you full control, zero lock-in, and no hidden fees.

How SafeLine Works

SafeLine acts as a reverse proxy, inspecting all HTTP/HTTPS traffic before it reaches your backend.

Suspicious activity and malicious requests are blocked in real time, while legitimate traffic flows seamlessly.

This setup makes SafeLine a protective shield between your users and your application.

Why Add a WAF to Your Stack?

Firewalls are no longer optional. A WAF:

• Blocks malicious requests before they hit your code
• Filters traffic based on flexible rules
• Prevents data leaks and unauthorized access
• Adds a crucial layer of defense against both common and emerging web threats

Think of it as a reverse proxy bodyguard — keeping attackers out while letting real users in.

What SafeLine Protects Against

SafeLine shields your applications from a wide range of exploits, including:

• SQL Injection (SQLi)
• Cross-Site Scripting (XSS)
• Code and Command Injection
• Server-Side Request Forgery (SSRF)
• XML External Entity (XXE)
• Path Traversal
• Remote Code Execution (RCE)
• CRLF Injection
• Brute-force login attempts
• HTTP floods and abuse
• Malicious crawlers and bots

Key Features

• Attack Prevention — Out-of-the-box rules for SQLi, XSS, SSRF, injections, directory traversal, and more.
• Smart Rate Limiting — Stop brute-force attacks and abuse by analyzing IP and request frequency.
• Bot Detection & Challenges — Block scrapers and automated bots without harming real users.
• Access Control — Add simple authentication gates for staging environments or admin areas.
• Dynamic Response Encryption — Make scraping harder by encrypting HTML and JavaScript on every request.

Get Started in Minutes

• Live Demo: SafeLine WAF Dashboard
• GitHub Repo: chaitin/SafeLine
• Community: Join Discord

SafeLine is completely free and open-source under GPL.

Whether you’re protecting a side project or an enterprise service, SafeLine gives you full control of your web traffic security — no cloud required.