chaitin

    chaitin/SafeLine

    #51 this week

    SafeLine is a self-hosted WAF(Web Application Firewall) / reverse proxy to protect your web apps from attacks and exploits.

    api
    security
    self-hosted
    api-gateway
    application-security
    appsec
    blueteam
    bruteforce
    captcha
    cve
    cybersecurity
    firewall
    hackers
    http-flood
    sql-injection
    vulnerability
    waf
    web-application-firewall
    web-security
    websecurity
    xss
    Go
    GPL-3.0
    21.2K stars
    1.4K forks
    21.2K watching
    Updated 5/4/2026
    View on GitHub

    Scale data-heavy AI workloads

    while keeping costs low with S3-compatible storage.

    BackblazeLearn more

    Loading star history...

    Health Score

    37

    Activity
    42
    Community
    25
    Maintenance
    38
    Last release16d ago

    Weekly Growth

    +0

    +0.0% this week

    Contributors

    21

    Total contributors

    Open Issues

    85

    Use Cases & Benefits

    About SafeLine

    SafeLine - Make your web apps secure

    🏠 Website   |   📖 Docs   |   🔍 Live Demo   |   🙋‍♂️ Discord   |   中文版

    👋 INTRODUCTION

    SafeLine is a self-hosted WAF(Web Application Firewall) to protect your web apps from attacks and exploits.

    A web application firewall helps protect web apps by filtering and monitoring HTTP traffic between a web application and the Internet. It typically protects web apps from attacks such as SQL injection, XSS, code injection, os command injection, CRLF injection, ldap injection, xpath injection, RCE, XXE, SSRF, path traversal, backdoor, bruteforce, http-flood, bot abused, among others.

    💡 How It Works

    By deploying a WAF in front of a web application, a shield is placed between the web application and the Internet. While a proxy server protects a client machine’s identity by using an intermediary, a WAF is a type of reverse-proxy, protecting the server from exposure by having clients pass through the WAF before reaching the server.

    A WAF protects your web apps by filtering, monitoring, and blocking any malicious HTTP/S traffic traveling to the web application, and prevents any unauthorized data from leaving the app. It does this by adhering to a set of policies that help determine what traffic is malicious and what traffic is safe. Just as a proxy server acts as an intermediary to protect the identity of a client, a WAF operates in similar fashion but acting as a reverse proxy intermediary that protects the web app server from a potentially malicious client.

    its core capabilities include:

    • Defenses for web attacks
    • Proactive bot abused defense
    • HTML & JS code encryption
    • IP-based rate limiting
    • Web Access Control List

    ⚡️ Screenshots

    Get Live Demo

    🔥 FEATURES

    List of the main features as follows:

    • Block Web Attacks
      • It defenses for all of web attacks, such as SQL injection, XSS, code injection, os command injection, CRLF injection, XXE, SSRF, path traversal and so on.
    • Rate Limiting
      • Defend your web apps against DoS attacks, bruteforce attempts, traffic surges, and other types of abuse by throttling traffic that exceeds defined limits.
    • Anti-Bot Challenge
      • Anti-Bot challenges to protect your website from bot attacks, humen users will be allowed, crawlers and bots will be blocked.
    • Authentication Challenge
      • When authentication challenge turned on, visitors need to enter the password, otherwise they will be blocked.
    • Dynamic Protection
      • When dynamic protection turned on, html and js codes in your web server will be dynamically encrypted by each time you visit.

    🧩 Showcases

    Legitimate UserMalicious User
    Block Web Attacks
    Rate Limiting
    Anti-Bot Challenge
    Auth Challenge
    HTML Dynamic Protection
    JS Dynamic Protection

    🚀 Quickstart

    [!WARNING] 中国大陆用户安装国际版可能会导致无法连接云服务,请查看 中文版安装文档

    📦 Installing

    Information on how to install SafeLine can be found in the Install Guide

    ⚙️ Protecting Web Apps

    to see Configuration

    📋 More Informations

    Effect Evaluation

    MetricModSecurity, Level 1CloudFlare, FreeSafeLine, BalanceSafeLine, Strict
    Total Samples33669336693366933669
    Detection69.74%10.70%71.65%76.17%
    False Positive17.58%0.07%0.07%0.22%
    Accuracy82.20%98.40%99.45%99.38%

    Is SafeLine Production-Ready?

    Yes, SafeLine is production-ready.

    • Over 180,000 installations worldwide
    • Protecting over 1,000,000 Websites
    • Handling over 30,000,000,000 HTTP Requests Daily

    🙋‍♂️ Community

    Join our Discord to get community support, the core team members are identified by the STAFF role in Discord.

    • channel #feedback: for new features discussion.
    • channel #FAQ: for FAQ.
    • channel #general: for any other questions.

    Several contact options exist for our community, the primary one being Discord. These are in addition to GitHub issues for creating a new issue.

       

    💪 PRO Edition

    Coming soon!

    📝 License

    See LICENSE for details.

    Discover Repositories

    Search across tracked repositories by name or description