基于VPN日志的远程学习和科研态势研究
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Situation Research on Remote Learning and Scientific Research Based on VPN Logs
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    摘要:

    新冠疫情的暴发, 学生教工无法返校的情况下, 绝大多数高校采用VPN的方式保证远程学习和科研. 为了解具体情况, 采集了2020年2月至2020年9月新冠疫情期间北京大学的VPN日志, 从使用人数、登录登出时间、使用时长、聚类分析、用户类别5个方面进行讨论. VPN每日使用人数最高约1.5万, 同时在线人数最高约0.5万, 每日的用户平均使用时长最高325 min, 几项数据表明, 学生教工高度依赖VPN进行远程学习和科研, 根据用户的每日平均使用时长和使用天数对用户进行聚类分析, 可以大致将用户分为4类; 对用户类别进行分析, 理工科用户VPN使用时间比文科用户略长, 但变化趋势基本一致. 这些数据对于了解VPN使用情况, VPN资源调整具有参考价值. 虽然新冠疫情期间VPN为校内资源的获取提供了便利, 但其带来的安全隐患也不容忽视, 用户终端如果保护措施不足就容易受到黑客的攻击, 从而作为跳板窃取校内资源或者攻击校内其他机器. 在远程学习和科研将成为新常态的趋势下, 是“甘饴”还是“毒药”? 高校都应该做好充足的准备来应对.

    Abstract:

    With the outbreak of the COVID-19 pandemic, most colleges and universities have adopted VPN to ensure remote learning and scientific research when students and teachers cannot return to school. To understand the specific situation, we collect the VPN logs of Peking University during the COVID-19 pandemic from February 2020 to September 2020 and discuss the number of users, login and logout time, usage time, cluster analysis, and user categories. The maximum number of daily users of VPN is about 15 000, and the maximum number of concurrent users is about 5000. Moreover, the average daily usage time of VPN is up to 325 minutes. These data show that students and teachers rely highly on VPN for remote learning and scientific research. According to the daily average usage time and the number of days of use, the users can be roughly divided into 4 categories. The VPN usage time of science and engineering users is slightly longer than that of liberal arts users, but the trend of change is the same. These data are of reference value for understanding VPN usage and adjusting VPN resources. Although VPN has facilitated the acquisition of school resources during the COVID-19 pandemic, the security risks it brings cannot be ignored. If protections are not enough, the user terminal will be vulnerable to attacks by hackers, who can steal resources or attack other machines in school using the user terminal as a springboard. As remote learning and scientific research will become the new normal, is it “sweet” or “poisonous”? Colleges and universities should be well prepared to deal with it.

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赖清楠,郭强.基于VPN日志的远程学习和科研态势研究.计算机系统应用,2021,30(11):63-70

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  • 收稿日期:2021-01-15
  • 最后修改日期:2021-02-07
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  • 在线发布日期: 2021-10-22
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