Rack::Geofilter

A simple gem to block traffic from unauthorized countries. Useful in case your service is not available in those countries or if you are under attack.

It currently relies on the CF-IPCountry added by Cloudflare firewall.

If you do not use that service you can not use this gem.

Add this line to your application's Gemfile:

gem 'rack-geofilter'

And then execute:

$ bundle install

To use with Rails, add to your config/application.rb the following line

config.middleware.insert_before ActionDispatch::RemoteIp, Rack::Geofilter

Then setup the environment variable BLOCKED_COUNTRIES with a comma separated list of the ISO 3166-1 Alpha-2 codes of the countries you want to block, e.g.,

BLOCKED_COUNTRIES="UA,RU,JP,KP,KR"

This will block the traffic from those countries and return

451 Service not available in country of origin

Bug reports and pull requests are welcome on GitHub at https://github.com/alessio-signorini/rack-geofilter.

The gem is available as open source under the terms of the MIT License.