FORTRESS: An Efficient and Distributed Firewall for Stateful Data Plane SDN

Table 6

Differences between FORTRESS and FlowTracker.

		FlowTracker	FORTRESS	FORTRESS
			Cooperative Architecture	Stand-Alone Architecture
Layers involved	Data plane	✔	✔	✔
	Control plane	✔	✔	✘
# packets forwarded to the controller per session		All the traffic	4	0
Sessions detection	Control plane	✔	✘	✘
	Data plane	✘	✔	✔
Flow table modification	Control plane	✔	✘	✘
	Data plane	✘	✘	✘