Malicious node detection mechanisms, Computer Network Security

Many applications are vulnerable to intrusion attacks and can provide misleading reports about misbehaving nodes. Some of the mechanisms under such a category include the Bayesian fault recognition algorithm which relies on the spatial relationship of environmental conditions. Other schemes which have been tried but failed include the autoregression technique which relies on the strength of the signal transmitting data, the network voting algorithm, and the weighted trust evaluation based on trust levels on a hierarchical network. All the above mechanisms have suffered various weaknesses when used in WSN.

The mechanisms integrated into the WSN network with triple key management scheme to provide a complete secure network uses a Dual Threshold. In this context, α1 and α2 defined with appropriate trust values are used. The mechanism has been proven to provide enhanced node detection performance. The mechanism operates by enabling each sensor node in the wireless network to have trust values updated each time an event occurs to provide the correct report.

1303_Malicious node detection mechanisms.png

Figure: Weighted diagram of WSN nodes

A study by Lazos and Poovendran shows that the weighted graph illustrated above shows that weight wij, has values that range between 0 and 1 etc. A typical example where wij =1. Here, Lazos and Poovendran show that the corresponding nodes have trust value is vj as shown above. On the other hand, when the value of wij is equal to zero, there is no trust value and a flag Fi is set to 1. The node is faulty. Detections can be based on distributed events based on the dual threshold technique. As mentioned above, there are two thresholds, α1 and α2; with α1 being used to detect an event while ensuring a low false alarm rate exists. On the other hand, the threshold α2 helps nodes that are on or near the boundary region of an event to pass the test reflecting accurately the level of detection as illustrated in figure 4 below.

1021_Malicious node detection mechanisms1.png

Figure: Binary detection of malicious nodes

Posted Date: 7/27/2013 6:22:11 AM | Location : United States







Related Discussions:- Malicious node detection mechanisms, Assignment Help, Ask Question on Malicious node detection mechanisms, Get Answer, Expert's Help, Malicious node detection mechanisms Discussions

Write discussion on Malicious node detection mechanisms
Your posts are moderated
Related Questions
Write a two to three (2-3) page paper in which you: Explain how the Web user interfaces help donors to make decisions. Relate the emotional thread demonstrated in the case study to

Problem a) Give the destination IP address, upper layer protocol, TTL in decimal and header checksum in hexadecimal; the source port number and the destination port number in deci

The world has to deal with newly released vulnerabilities on a daily basis.  These vulnerabilities eventually lead to active exploits of systems, and it is our job as cyber securit

ARP MESSAGE FORMAT Although the ARP data packet format is sufficiently general to allow hardware addresses and arbitrary protocol. ARP is almost usually used to bind a 32-bit

In broadcast topology there are further two types 1) SATELLITE\RADIO 2) RING TOPOLOGY In a radio or satellite topology every computers are connected to each other via radio o

what is computer network?

Question: (a) What do you understand by the term "integrity"? (b) Which type of attack denies authorized users access to network resources? (c) You have discovered tha

The Role of the Investigation The first phase, investigation is the most significant. What problem is the system being developed to solve? During investigation phase, objectives

ARP RESPONSES Let's search out how does a computer know whether an incoming frame have an ARP message. The type field in the frame header defines that the frame contain an ARP

All references using actual quotes, paraphrase, or specific arguments, should employ page numbers. The essay is based on the unit content and should engage with the set readings, a