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Gaining a better knowledge of one's own network is crucial to effectively manage and secure today's large, diverse campus and enterprise networks. Because of the large number of IP addresses (or hosts) and the prevalent use of dynamic IP addresses, profiling and tracking individual hosts within such large networks may not be effective nor scalable. In this paper, we develop a novel methodology for...
As a key approach to securing large networks, existing anomaly detection techniques focus primarily on network traffic data. However, the sheer volume of such data often renders detailed analysis very expensive and reduces the effectiveness of these tools. In this paper, we propose a light-weight anomaly detection approach based on unproductive DNS traffic, namely, the failed DNS queries, with a novel...
In order to enhance the security of vehicular ad hoc networks (VANETs). By dividing the roadside units (RSUs) into application-RSUs (AP-RSUs) and authentication-RSUs (AU-RSUs) in application layer, we give a new security scheme for VANETs. This functional division of RSUs makes VANETs more logically clear. AU-RSUs record vehicles' real identities and assign temporary certificates to them. The temporary...
People increasingly depend on the mobile communication networks, specially the third generation of mobile communication network (3G), to transmit data with one another. Although 3G networks implement data confidentiality and integrity within network components, but don't offer user's end-to-end confidentiality and integrity. End-to-end encryption could improve these vulnerabilities, and facilitates...
Plenty of applications and services for personal communications in wireless mobile networks (WMN) are brought up recently, such as mobile commerce applications and teleconference applications. So the end-to-end security requirements are necessary. Nevertheless WMN don't offer end- to-end confidentiality and integrity mechanism for personal communications. The linchpin of end-to-end security is the...
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