Introduction: Why Your Website Needs Protection
Every website is under constant attack. From SQL injections and XSS to brute-force logins and malicious bots, hackers are relentless. A single breach can compromise user data, destroy SEO rankings, and harm your brand’s reputation.
Enter SafeLine WAF, an open-source, Nginx-based Web Application Firewall trusted by over 300,000 deployments worldwide. Whether you’re running a personal blog or an enterprise website, SafeLine provides enterprise-grade protection — for free.
Pain Points Solved by SafeLine
- SQLi, XSS, RCE, SSRF, XXE: Stop hackers before they reach your backend.
- Bot Traffic & Scraping: Protect content from automated scrapers and competitors.
- Brute-Force / HTTP Flood Attacks: Rate limiting keeps login endpoints and APIs safe.
- Misconfigurations & Unknown Vulnerabilities: Intelligent semantic analysis detects attacks even when patterns are new or unusual.
SafeLine acts as a reverse proxy, filtering all HTTP/HTTPS traffic so your website only sees legitimate requests.
Core Features That Make SafeLine Stand Out
1. Intelligent Semantic Analysis
Unlike traditional WAFs, SafeLine understands context and logic, not just patterns. This drastically reduces false positives while catching sophisticated attacks.
- Detection Rate: 76.17%
- False Positive Rate: 0.22%
2. Dynamic Protection & Frontend Obfuscation
HTML and JavaScript are dynamically scrambled per request. Humans see normal pages; bots see gibberish. This prevents content theft, automated scraping, and some XSS attacks.
3. Access Control & Authentication Integration
Support for LDAP, OIDC, DingTalk, WeCom or standard login credentials. Protect sensitive content at the WAF layer without adding extra servers.
4. Rate Limiting & HTTP Flood Defense
Customize request thresholds per application or path. Automatically throttle or challenge suspicious traffic to keep your site stable under high load.
5. Bot Detection & Human Verification
Detect automated scanners like AWVS or Nessus without disturbing real users. Challenges (CAPTCHA or interaction) are triggered only when necessary.
6. Threat Intelligence & Plugin Ecosystem
Subscribe to threat feeds and extend SafeLine via Lua plugins. Integrate with SIEM, SOAR, or alert systems for full enterprise-grade security workflows.
Real-World Performance
- AntSword Webshell Attempts: Blocked instantly
- Obfuscated / Encoded Payloads: Blocked
- 0Day-style Fastjson @type Injection: Detected and blocked
Logs are detailed and accessible through the Web Admin Console, giving admins full visibility into attacks.
Easy Deployment & Usability
Deployment is simple and fast:
bash -c "$(curl -fsSLk https://waf.chaitin.com/release/latest/manager.sh)" -- --en
- Containerized for easy scaling
- Web-based dashboard for configuration
- Low latency and high concurrency performance
Even beginners can protect their websites in minutes.
SafeLine vs Competitors
Independent tests show:
- Strict Mode: 76.17% detection, 0.22% false positives
- Balanced Mode: Detection higher than ModSecurity, false positives lower than Cloudflare
This combination of accuracy, performance, and ease-of-use makes SafeLine WAF a top choice for developers and enterprises alike.
Conclusion: Why You Should Try SafeLine
SafeLine WAF is more than a firewall — it’s your website’s personal bodyguard. With free, open-source deployment, AI-powered protection, and an active community, it gives peace of mind without the headaches of complex configurations.
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