Quantitative Analysis of the Security of Software-Defined Network Controller Using Threat/Effort Model

Table 2

Results of TE value calculation for protocol interfaces of the controller.

Type of protocol parameters	Number of presequences	Number of postsequences	TE value
flow_mod	6	19	3.17
features_request	2	3	1.50
features_reply	1	1	1.00
tcp_msg	17	11	0.65
hello_msg	2	2	1.00