When it comes to cybersecurity tools, Web Application Firewalls (WAFs) are often at the forefront of discussions. Unlike traditional firewalls, a WAF operates at the application layer, focusing on protecting web systems running on HTTP/HTTPS protocols from malicious attacks. Its powerful security features make it much harder for hackers to exploit web applications, providing essential protection in today's cybersecurity landscape.

Introducing SafeLine:

A simple, effective, and powerful free WAF.
SafeLine uses an industry-leading semantic engine to detect threats and, as a reverse proxy, safeguards your website from hacker attacks. With widespread community recognition, SafeLine stands out for its robust performance and strong protection capabilities. One minor drawback, however, is that its console isn’t optimized for mobile devices, making remote management less convenient.

SafeLine is the top recommendation among all WAF solutions. It’s said that SafeLine’s enterprise edition can cost up to millions of dollars, and the community edition leverages the same enterprise-grade protection, ensuring solid security. This is one of the main reasons why SafeLine Community Edition became so popular on GitHub shortly after its release.

GitHub: https://github.com/chaitin/SafeLine
Star: 11.8k

SafeLine, developed over nearly a decade by Chaitin Technology, is driven by an intelligent semantic analysis algorithm that powers its core detection capabilities.

Why SafeLine?

Convenience

• SafeLine uses containerized deployment, allowing for installation with a single command—zero-cost setup.
• Security configuration works out-of-the-box, requiring no manual maintenance, making it a "set it and forget it" solution for security management.

Security

• With its industry-first intelligent semantic analysis algorithm, SafeLine offers precise detection with low false positives, making it difficult to bypass.
• No rule-based detection: SafeLine handles unknown 0day attacks seamlessly, without needing predefined rules.

Performance

• Powered by a linear security detection algorithm without traditional rules, it offers request detection delays at the millisecond level.
• Exceptional concurrency: a single core can handle over 2000 TPS. With sufficient hardware, there's no limit to the amount of traffic SafeLine can support.

High Availability

• Built on Nginx, SafeLine’s traffic processing engine ensures both performance and stability.
• SafeLine comes with a robust health-check mechanism, delivering service availability of 99.99%.

With frequent updates and strong community support, SafeLine is continuously evolving to meet modern security challenges.