Learning effectiveness of exercises using network security exercise system LiNeS Cloud

In traditional network experiments, students gathered in classrooms and used specialized equipment to construct networks. However, there were significant financial costs associated with providing these classrooms and equipment. With the advancements in virtual machine technology and improvements in computing performance, it has become possible to simulate networks using virtual machines as network devices on computers. Consequently, e-learning systems have been developed, allowing network experiments to be conducted by operating virtual machines from network-connected computers.The author proposed LiNeS Cloud, a web-based exercise system for network security training, utilizing the virtual machine User-mode Linux. LiNeS Cloud aims to provide intuitive and seamless operation with responsive performance. The prototype of LiNeS Cloud was evaluated in a laboratory setting and received positive feedback regarding usability, with no issues pointed out regarding responsiveness.The author conducted seven 90-minute classes using LiNeS Cloud for network security training with third-year students enrolled in the network course of the Department of Information Engineering at the university where the author is employed. The learning effectiveness of this exercise was measured through self-assessment questionnaires completed by the students. The responses from the pre- and post-exercise questionnaires indicated a significant learning effect resulting from the exercises.