DEV Community

Sharon
Sharon

Posted on

SafeLine WAF: Free, Powerful Protection for Every Webmaster

#webdev #safeline #waf #beginners

What is SafeLine?

SafeLine is a powerful Web Application Firewall (WAF) designed to protect websites from a wide range of cyberattacks and exploits. It acts as a reverse proxy, filtering traffic before it reaches your server, ensuring that only safe requests get through.

Protection Highlights

SafeLine defends against:

  • Injection Attacks: SQLi, code injection, OS command injection, CRLF, LDAP, XPath.
  • Exploits: RCE, XSS, XXE, SSRF, path traversal, backdoors.
  • Abuse & Flooding: brute force, HTTP floods, bot abuse.

What is a WAF?

A Web Application Firewall works at the application layer (HTTP/HTTPS), unlike traditional firewalls that operate at the network level.

It’s designed to block hacker attacks and safeguard your web applications from modern threats.

Core Capabilities of SafeLine

1. Defense Against OWASP Top 10

Protects against SQL injection, XSS, insecure deserialization, and other common threats.

2. 0-Day Protection

Uses an intelligent, rule-free detection engine to stop unknown attacks, even without prior signatures.

3. Proactive Bot Defense

Automatically challenges suspicious traffic with CAPTCHA, preventing automated bot activity.

4. In-Browser Code Encryption

Encrypts and obfuscates HTML and JavaScript on the fly, preventing code scraping and reverse engineering.

5. Web Authentication

Adds an authentication layer for apps without built-in access control, blocking unauthorized users.

6. Access Control List (ACL)

Provides fine-grained traffic filtering to allow or block specific requests.

Why Choose SafeLine?

  • Free & Easy to Deploy

    Run with a single Docker command. No manual maintenance required.

  • High Detection Accuracy

    Features the industry’s first semantic analysis engine, delivering low false positives and robust 0-day protection.

  • Performance at Scale

    Rule-free linear detection ensures ~1ms latency. A single core handles 2000+ TPS, with virtually unlimited scalability depending on hardware.

  • High Availability

    Built on Nginx with health checks for 99.99% service uptime.

Deployment Architecture

Imagine your website traffic flow:

External users send requests to your server. Without a WAF, malicious traffic reaches your app directly.

With SafeLine in place:

  • Traffic first goes through SafeLine as a reverse proxy.
  • Attacks are filtered out.
  • Only safe requests are forwarded to your backend server.

This ensures attackers never directly touch your website infrastructure.

Get Started

SafeLine is free, fast, and built for developers. If you’re a webmaster looking for a reliable WAF that actually works — this is it.

Join the SafeLine Community

If you continue to experience issues, feel free to contact SafeLine support for further assistance.

Top comments (0)