International Journal of Computer Networks and Communications Security

Volume 2, Issue 8, August 2014




Time Dependent Finite State Machine based Method for Intrusion Detection in Mobile Ad Hoc Networks

Pages: 242-249 (8) | [Full Text] PDF (737 KB)
Faculty of Computer Science and IT, U.P.M. University, Kuala Lumpur, Malaysia

The Ad hoc On-Demand Distance Vector (AODV) routing protocol designed with the purpose of mobile ad hoc networks has numerous advantages such as low network utilization, fast adjustments to link conditions and low memory and processing overheads. However, if security is not considered in this protocol it is at risk to many attacks. The conventional methods such as firewalls, encryption is no longer adequate. In this paper, we identify three types of threats against AODV which influence the routing message in MANET. Our solution is based on the use of Time based Finite State Machine to identify correct and malicious behavior in AODV. The TFSM have been modelled using JFLAP and simulated in MANET environment using C#.
Index Terms AODV, MANET, Intrusion Detection, Time Finite State Machine, Automata, JFLAP, C#.



A Multi Objective Virtual Machine Placement Method for Reduce Operational Costs in Cloud Computing by Genetic

Pages: 250-259 (10) | [Full Text] PDF (459 KB)
Reza Sookhtsaraei, Mirmorsal Madani and Atena Kavian
Faculty member of Payam Noor University, Department of computer engineering and information technology, Tehran, Iran
Faculty member of Kordkuy Islamic Azad University, Departmen of Computer Engineering, Kordkuy, Iran
Amirkabir University, Department of Computer Engineering, Tehran, Iran

Increase of demand in using cloud computing caused increase of operational costs consumption energy and resources consumed. As a result moreover satisfying services with quality requested through service level agreement SLA, we must reduce consuming energy and cost resulting from resources used. According to too much researches conducted on reducing consumption energy, in this article we will focus on reducing operational costs resulting from wasting resources using technique of mapping virtual machines to service providers whose the most important one is using on demand provisioning model which will prevent from wasting resources and more exploitation of cloud computing and reduction in operational costs. One of the key aspects of the process is considering load feature of virtual machines. But most tasks done in this field do not care about it and on the other hand only optimization is noticed. Due to existence of faults and also high level of exploitation of genetic algorithms in finding fine results in searching space, in this article a method was presented based on multi-purpose genetic algorithm, where by considering task feature of virtual machines. Several objectives are considered for optimizing during mapping process. Comparing results gained from algorithm suggested with a random algorithm and one algorithm in the first multi-purpose choice, we can come to this conclusion that the algorithm suggested will establish better results on providence in resources and reducing operational costs. 
Index Terms Cloud computing, virtual machine, multi-purpose genetic algorithm, optimization.



M2E2: A Novel Multi-hop Routing Protocol for Wireless Body Sensor Network

Pages: 260-267 (8) | [Full Text] PDF (437 KB)
Omid Rafatkhah and Mina Zolfy Lighvan
Department of Electrical and Computer Engineering, Tabriz University, Tabriz, Iran

Wireless Body Sensor Networks (WBSN) systems will enable people to monitor themselves with devices that give proactive warnings of illness so that they can turn to their doctors earlier, when intervention can be the most effective. In this paper, we propose a reliable, Energy efficient and high throughput routing protocol for heterogeneous Wireless Body Area Networks (WBANs); Multi-Mode Energy-Efficient Multi-hop Protocol (M2E2). The proposed routing protocol uses fixed deployment of wireless sensors (nodes) in home and mobility support for sensor nodes on human body. The sensor nodes on human body select the best routing by receiving Home-Signal to minimize energy consumption. Also direct link is used for emergency and real-time data while Multi-hop link is used for normal data transfer. M2E2 is thermal-aware which ability Recognition the link Hot-spot and Replacement the links. So multi-mode and mobility support developed Reducing energy consumption and to overcome the problem due mobility of human body causes disconnection. We do a comprehensive analysis supported by MATLAB simulations to provide for the network lifetime maximization. In simulations, we analyze our protocol in terms of throughput, number of dead nodes over time, total energy of network and number of cluster heads. Simulation results show better performance for the proposed protocol as compared to the existing one. 
Index Terms Wireless Body Sensor Networks, Multi Mode, Mobility, Multi-hop, Single-hop.



On the Signaling Analysis of SIP-Based Terminal Mobility Management within IEEE 802.11 and 802.16 Heterogeneous Networks

Pages: 268-278 (11) | [Full Text] PDF (990 KB)
Wen-Shiung Chen, Ruei-Bang Chen, Jeng-Yueng Chen and Lili Hsieh
VIP-CCLab., Dept. of Electrical Engineering, National Chi Nan University, Puli, Nantou, Taiwan
Dept. of Information Networking Technology, Hsiuping University of Science and Technology, Dali, Taichung, Taiwan
Dept. of Information Management, Hsiuping University of Science and Technology, Dali, Taichung, Taiwan

This paper analyzes the SIP-based mobility management behavior within a heterogeneous network interconnecting IEEE 802.11-based wireless local area network (WLAN) and IEEE 802.16-based wireless metropolitan area network (WMAN). Our work focuses on signaling processes, during handoff between 802.11 and 802.16 networks. Particularly, the MAC layer technologies of 802.11 and 802.16 are examined in great detail. The SIP-based handoff procedure consists of the following sub-procedures: (i) Mobile Host (MH) initialization at MAC layer, (ii) Acquisition of a new IP address using Dynamic Host Configuration Protocol (DHCP) in a newly connected network, (iii) SIP terminal mobility management process for both pre-call mobility and mid-call mobility. Our analytical results and experimental results show the signaling delay and overhead of handoff between 802.11 and 802.16 heterogeneous networks. 
Index Terms Terminal Mobility Management, IEEE 802.11, IEEE 802.16, SIP, Heterogeneous Network.