What networking entities Neutron supports?

Neutron supports a variety of networking entities, including:

• Network: An isolated layer-2 broadcast domain.
• Subnet: A block of IP addresses that can be assigned to instances.
• Port: A connection point for attaching a single device, such as an instance, to a virtual network.
• Router: A logical entity that connects multiple layer-2 networks.
• Floating IP: A public IP address that can be associated with an instance to provide external connectivity.
• Security Group: A collection of firewall rules that control inbound and outbound traffic to instances.