The OpenStack Neutron provides a comprehensive set of features to secure access to the network resources. Neutron provides two levels of security restrictions. Security groups control the traffic flow between two ports in a Network by applying security rules on the ports. Firewalls secure the traffic flowing across the Networks by applying security rules on the Router.

To implement these recipes, we will use an OpenStack setup as described in the following image:

This setup has two compute nodes and one node for the controller and networking services.