25 Computer Networks

A Survey of Solutions to Protect Against All Types of Attacks in Mobile Ad Hoc Networks

In recent years mobile networks have expanded dramatically, compared with other wireless networks. Routing protocols in these networks are designed with the assumption that there is no attacker node, so routing protocols are vulnerable to various attacks in these networks. In this paper, we review the network layer attacks and then we simulate the impact of black hole attack on ad hoc on demand...

The application of DEA and queuing models to large scale computer networks

The Effect of Globalization on the Moral Values Change among the Youth

Globalization constitutes ideas, behavior and personality of people according to values and norms and affects different aspects of life of people (individually and socially). This research has been done in order to study the effect of globalization on moral values of the youth regarding sociology perspective. Statistical universe of this research includes 800 persons in Tehran. This research ha...

A New Intrusion Detection System to deal with Black Hole Attacks in Mobile Ad Hoc Networks

By extending wireless networks and because of their different nature, some attacks appear in these networks which did not exist in wired networks. Security is a serious challenge for actual implementation in wireless networks. Due to lack of the fixed infrastructure and also because of security holes in routing protocols in mobile ad hoc networks, these networks are not protected against attack...

A Survey on Multicast Routing Approaches in Wireless Mesh Networks

Wireless mesh networks (WMNs) which mediates the broadband Internet access, have been recently received many attentions by the researchers. In order to increase capacity in these networks, nodes are equipped with multiple radios tuned on multiple channels emerging multi radio multi-channel WMNs (MRMC WMNs). Therefore, a vital challenge that poses in MRMC WMNs is how to properly assign channels ...

Improve Replica Placement in Content Distribution Networks with Hybrid Technique

The increased using of the Internet and its accelerated growth leads to reduced network bandwidth and the capacity of servers; therefore, the quality of Internet services is unacceptable for users while the efficient and effective delivery of content on the web has an important role to play in improving performance. Content distribution networks were introduced to address this issue. Replicatin...