I am looking for a good and free WAF (Web Application Firewall) all the time. By chance, I came across a free WAF called SafeLine. Its core detection capability is driven by intelligent semantic analysis algorithms.
After some time of experience, I found that the product iterations are very fast, and the community atmosphere is quite good (the product team provides excellent technical support, responds very promptly, and even answers very simple questions; in addition, you can directly propose feature requests in the community or on GitHub).
Anti-Bot Feature of SafeLine
We'll focus on the anti-bot feature. It's used to verify the visitor is a human or a machine.
Features such as "Bot Management", "Traffic Modeling", "Website Monitoring", "API Management" and so on are also in the product team’s roadmap (if you have similar needs, please quickly star the issue in the GitHub repository, as the product team is said to adjust priorities based on community feedback).
Bots use automated programs to probe websites, performing automated attacks through legitimate and effective access to gain core system permissions, steal sensitive information, implant malicious software, and launch DDoS attacks, among other goals.
SafeLine's anti-bot capability is a free solution. No development is required; you can simply configure rules through an interface to activate it. It feels very user-friendly.
After configuration, requests that meet certain conditions will see SafeLine’s human-machine verification page upon access.
SafeLine uses client fingerprinting, JS challenges, interactive behavior recognition, browser anti-debugging, IP profiling, and other methods to comprehensively verify the security of the environment, identifying and blocking bot clients with malicious intention.
In conclusion, SafeLine Community Edition seems to be a quite useful free WAF. Anyone in need can give it a try. Lastly, here’s the website: waf.chaitin.com
SafeLine Demo: https://demo.waf.chaitin.com:9443/dashboard
Github:https://github.com/chaitin/SafeLine
Discord:https://discord.gg/wVyX7vDE
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