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Prerequisites:
  • Ruby 2.5 or higher
  • Rack 1.0 or higher
BlackLab WAF is a Rack middleware, which means it plugs into the Ruby web server interface.
If you are using Rails, Sinatra, or any other Rack-based framework, you already meet this requirement.

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What is Rack?

Rack is a minimal interface between Ruby web servers and Ruby web applications.
It provides a consistent API so middleware like BlackLab can inspect and filter incoming requests before they reach your app. For example, in a config.ru file: 
require "rack"
require "black_lab"

use BlackLab::Middleware
run MyApp
This ensures all HTTP requests go through BlackLab WAF before being handled by your app.

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Supported frameworks

BlackLab works out-of-the-box with any Rack-compatible framework, such as:
  • Ruby on Rails
  • Sinatra
  • Hanami
  • Padrino
Or plain Rack apps