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

Table 1

Calculation results of TE values of entry points and exit points of the controller.

Name of components	Number of functions	DEP	DExP	IEP	IExP	TE value
app.ofctl_rest	3	2	0	1	0	3.15
app.rest_conf	4	1	0	3	0	3.07
app.rest_rouTEr	6	4	0	2	0	2.91
app.rest_topology	4	1	0	3	0	3.11
controller.dpset	19	7	7	12	9	1.77
controller.ofp_handler	31	23	13	8	6	1.69
controller.controller	24	9	11	15	9	1.76

Note. DEP: direct entry point; DExP: direct exit point; IEP: indirect entry point; IExP: indirect exit point.