Rack::IpFilter

A Rack middleware component which does simple White and Black list filtering of remote IP Adresses.

Provides support for CIDR notation for ranges as well as specific addresses.

Installation

Add this line to your application's Gemfile:

gem 'rack-ip_filter'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rack-ip_filter

Usage

First require:

require 'rack/ip_filter'

For Rails, you can insert the middleware in your config/application.rb:

IP_WHITELIST = %w(192.168.2.0/24 127.0.0.1)

module YourApp
  class Application < Rails::Application
    config.middleware.use Rack::IpFilter, IpFilter::WhiteList.new(::IP_WHITELIST)
  end
end

See example/app.rb for a simple Sinatra app which illustrates proper usage.

Options

Rack::IpFilter takes two arguments, the first is an object that responds to approved? and returns a boolean. The second argument is the path to apply the filter, defaults to root: '/'.

IpFilter::WhiteList and IpFilter::BlackList ship with the gem and explicitly allow or block remote ip addresses respectively.

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request