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The ever-increasing complexity and diversity of the Internet pose several challenges to network operators and administrators and, in general, Internet users. More specifically, because of the diversity in applications and usage patterns; the prevalence of dynamic IP addresses and applications that do not conform to standard configuration (e.g. VoIP to bypass firewalls), monitoring and securing networks...
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...
This paper presents a design of a high-performance data replication system on FreeBSD (FRS). The system is embedded into replication device driver layer, does not depend on specific storage devices and logical volume manager, can achieve replication on data block level, has a strong independent, flexible and versatile. We describe the design considerations and decisions in defining HRS: Why replication...
Future mobile devices are expected to access different networks (such as 3rd generation network, WLAN, Bluetooth, Internet, and etc). Hence many sensitivity data are stored in them. How to protect the security of information and applications about mobile devices becomes an exigent problem. This paper proposes a secure authentication and authorization protocol for mobile devices. The protocol employs...
As the users' demand for informationization and mobile increasing, based on the development of wireless broadband technology, wireless cities in China are advancing to the implementation stage ahead. This paper attempts to take San Francisco for example to study the problems encountered by U.S. (United States) cities in the process of promoting public wireless broadband network, and the policies and...
The efficiency of traffic routing on complex networks can be reflected by the network capacity. In this paper, a new routing strategy is proposed based local dynamic information for enhancing the efficiency of traffic on scale-free networks. The strategy is governed by a single parameter. Simulation results show that maximizing the network capacity can generate an optimal parameter value. The detailed...
Cooperative learning is one of the basic characters of independent creative learning, and network environment is an important means of promoting cooperative learning. This paper not only analyses the theory of Web-based cooperative learning, learning content and learning pattern, but also proposes relevant implement measures combining the course features of software analysis and design. It also gives...
The design of Web page should be Internet-user-oriented. The key factor of a successful Web page design lies in that the designer can find out counterparts of products in the real world. Another important factor of a successful-designed web page is that the designer can represent the products by a combination of harmonious and inducing colors, images and characters. The pluralistic society nowadays...
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