How can you add IP restrictions to your rails app?

Question

Is there a way to add IP restrictions to the rails app. Some type of rack middleware so only the set list of IPs can access the rails app for security reasons?

Thanks

Answer 1

You can add a before_filter in the application controller and check the request IP,and redirect it to a no-access page.

if request.remote_ip !~ /^XXX\.YYY\.ZZZ\./
  redirect_to no_access_url
  return false
end

Answer 2

Use a routing constraint as described here: http://guides.rubyonrails.org/routing.html#advanced-constraints.