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Bottleneck analysis with NetKit: teaching information security with hands-on labs

In this paper, we describe our experience with developing a bottleneck analysis lab with a virtual network emulation environment NetKit. This lab is one of a series of online information security labs that provides students practical experiment opportunities at low cost and little effort. A few new real-world hands-on exercises with NetKit are introduced in this paper. We introduce the NetKit lab setup, outline major sections of the lab, illustrate lab instructions, and report the lab feedback. The hands-on labs can significantly help facilitating students' understanding of the concepts and challenges of computer networks and network security.