Here’s a strong recommendation for an open-source WAF (Web Application Firewall) that’s been developed for nearly 10 years. It comes in both community and professional editions, and the community edition(free) is more than capable of handling most use cases.
1. What is a WAF?
Let’s start with the basics for those who might not be familiar:
A WAF (Web Application Firewall) is a security solution deployed in front of websites at the application layer, offering protection through the following features:
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Web Vulnerability Protection:
Detects and blocks common web attacks like SQL injection, XSS (cross-site scripting), and more via predefined rules.
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Anti-CC Attack:
Provides protection against large-scale attacks like DDoS by filtering malicious traffic.
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Access Control:
Allows filtering based on IP address, region, or suspicious requests.
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Security Policy Enforcement:
Ensures input validation and error masking based on security standards like OWASP and PCI-DSS.
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Encrypted Communication:
Supports SSL certificates and HTTPS traffic control to secure communication.
2. Introducing Safeline WAF
Today, I’m recommending Safeline, a WAF developed by Chaitin Technology over the last 10 years. Powered by an intelligent semantic analysis algorithm, it’s built for the community, and its robust detection capabilities ensure hackers won’t breach your defenses.
Installation
- Operating System: Linux
- Architecture: x86_64
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Software Dependencies:
- Docker version 20.10.6 or higher
- Docker Compose version 2.0.0 or higher
- Minimal Setup: 1 CPU core, 1 GB RAM, 10 GB disk space
You can install it with just one command:
bash -c "$(curl -fsSLk https://waf.chaitin.com/release/latest/setup.sh)"
To log into the management console, open your browser and visit https://<your-ip>:9443. Follow the instructions on the screen.
If you can access GitHub, download it directly from: https://github.com/chaitin/safeline
If GitHub is inaccessible, try the demo at: https://demo.waf.chaitin.com:9443/dashboard
3. Key Features
Here’s a breakdown of Safeline’s major highlights:
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Ease of Use:
The WAF is containerized for quick deployment with a single command, reducing installation complexity. Pre-configured security settings allow you to use it right out of the box, simplifying management.
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Security Performance:
Safeline uses an in-house developed intelligent semantic analysis algorithm to detect unknown threats. It doesn’t rely on traditional signature rules, making it effective against 0-day attacks. The detection is precise with low false-positive rates, offering reliable protection.
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Detection Performance:
Safeline operates with a rule-free engine and high-efficiency algorithms that keep latency in the millisecond range. Its high concurrency handling allows a single CPU core to support heavy traffic, with excellent horizontal scaling capability.
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High Availability:
The WAF’s traffic processing engine is built on Nginx, ensuring stability and reliability. It also comes with a built-in health-check mechanism, providing an impressive uptime of 99.99%.
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