# File lib/deltacloud/drivers/ec2/ec2_driver.rb, line 675
        def create_firewall_rule(credentials, opts={})
          ec2 = new_client(credentials)
          groups = []
          opts['groups'].each do |k,v|
            groups << {"group_name" => k, "owner" =>v}
          end
          safely do
            ec2.manage_security_group_ingress(opts['id'], opts['port_from'], opts['port_to'], opts['protocol'],
              "authorize", opts['addresses'], groups)
          end
        end