I. INTRODUCTION In recent years, Mobile ad hoc network is used due to increasing number of mobile devices such as mobile phones, laptops, PDA etc., An ad hoc network consists of infrastructure based ad hoc network that depends on pre-constructed infrastructure made of fixed nodes and infrastructure less ad hoc network that does not depend on pre-existing infrastructure and it is dynamically cooperate with set of independent nodes. A Mobile ad hoc network is self-organized network without infrastructure connected by wireless links. Due to de-centralized infrastructure, a node can act both as router and host. The nodes can directly communicate each other within their transmission range otherwise the multi-hop network is needed. The mobile ad hoc network is widely used in day-to-day life such as military operations where an infrastructure is unknown to the soldiers. Web services like e-mail can be used for file transfer and it also used in multimedia applications. It is also used in disaster recovery such as earthquake, tsunamis etc. In MANET, the nodes are free to move, it will change its connection to other devices frequently. An important issue in MANET is routing between two nodes, due to the changing topology of the network. The routing protocol should be secure to protocol to protect against network attacks such as Black hole attack, worm hole attack, Dos attack, grey hole attack. Mostly AODV, DSR, DSDV are prone to the attacks. Research work concentrates in the field of routing and security. MANET has attacks in all the layers. In the physical layer jamming, intercept and eavesdrop attacks may occur. In the data link layer, traffic analysis, monitoring, disruption may occur. In the network layer, wormhole, black hole, byzantin... ... middle of paper ... ...e Selection Algorithm (HNSA) detectors to observe the deviations from the normal or expected behavior of the nodes. The main components of this scheme are anomaly detection engine that capture the data and compares with the users profile stored in the database and another is report database that the normal profiles and behavior are stored. BAIDS is implemented as an extension technique over DSR, AODV and DSDV. A risk aware response mechanism [20] is used for mitigating the routing attacks in MANET. The extended Dempster-Shafer theory evidence model of notion with importance factors and dempster rule of combination is non-associative and weighted is used to combine the multiple data from the observational node. An adaptive decision making considers both attacks and countermeasures. The response mechanism has local routing table recovery and global routing recovery.
The routing protocols for wireless sensor networks and underwater wireless sensor networks can be roughly
Sybil attacks are a threat to geographical routing protocols, since they require the exchange of coordinates for efficient packet routing. Ideally, a node only sends a set of coordinates, but under a Sybil attack, an attacker could pretend to be in many places at once. The Sybil attack can significantly reduce the effectiveness of fault-tolerant schemes such as distributed storage dispersity and multipath routing, and topology maintenance. Replicas, storage partitions, or routes believed to be using disjoint nodes could in actuality be using a single adversary presenting multiple identities. All of the techniques involve utilizing multiple identities. For instance, in a sensor network voting scheme, the Sybil attack might utilize multiple identities to generate additional “votes”. Similarly, to attack the routing protocol, the Sybil attack would rely on a malicious node taking on the identity of multiple nodes, and thus routing multiple paths through a single malicious
The Aim Higher College’s system administrators and network engineers have described seeing some strange behaviors such as high levels of traffic from many hosts that are causing system outages. The web servers of the college have been shutting down frequently by this traffic, it must be from a hacker group trying to attack the school with malicious software. I will review the network traffic from the college’s intrusion detection system and use an intrusion prevention system to block off these threats from the hackers.
In 1980, James Anderson’s paper, Computer Security Threat Monitoring and Surveillance, bore the notion of intrusion detection. Through government funding and serious corporate interest allowed for intrusion detection systems(IDS) to develope into their current state. So what exactly is IDS? An IDS is used to detect malicious network traffic and computer usage through attack signatures. The IDS watches for attacks not only from incoming internet traffic but also for attacks that originate in the system. When a potential attack is detected the IDS logs the information and sends an alert to the console. How the alert is detected and handled at is dependent on the type of IDS in place. Through this paper we will discuss the different types of IDS and how they detect and handle the alerts, the difference between a passive and a reactive system and some general IDS intrusion invasion techniques.
Johnson, D., Maltz, D. (1996). Dynamic Source Routing in Ad-hoc Wireless network. Print ISBN: 0 79239697 0
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Within the last decade, the internet has proven to be the most efficient way to complete tasks in today’s society. Every major business in today’s society relies on the internet to conduct business. Though the internet is a useful tool, our reliability on it opens up the door for cyber-attacks that can be detrimental to business as a whole. One example of a cyber-attacks that have recently started becoming more prevalent are DDoS attacks. Recently, DDoS attacks have been a rising issue for businesses owners who run their own servers, such as video game companies and other high profile web servers, including banks and other credit card payment gateways.
Waterman, Shaun. "Obama Hits Pause on U.S. Action in Face of Crippling Cyber Strikes from Syria, Iran." Washington Times 28 Aug. 2013. Print. (Source B)
When someone suspects that an unauthorized, unacceptable, or unlawful event has occurred involving an organization’s computer networks or data-processing equipment Computer security incidents are normally identified. Initially, the incident may be reported by an ultimate user, detected by a system administrator, identified by IDS alerts, or discovered
2. Difallah, D. E., Cudre-Mauroux, P., & Mckenna, S. A. (2013). Scalable Anomaly Detection for Smart City Infrastructure Networks. IEEE Internet Computing, 17(6), 39 - 47. doi: 10.1109/MIC.2013.84
Without proper protection, any part of any network can be susceptible to attacks or unauthorized activity. Routers, switches, and hosts can all be violated by professional hackers, company competitors. In fact, according to several studies, more than half of all network attacks are waged internally. To determine the best ways to protect against attacks, we should understand the many types of attacks that can be instigated and the damage that these attacks can cause to data. The most common types of attacks include Denial of Service (DoS), password, an...
Cryptography is the science and art of transforming messages to make them immune to attacks. The reason for adopting cryptography in any system is to establish a secured communication platform when other people (eavesdroppers) are listening. In particular, main function of cryptography is to provide end to end security of edge nodes. Encryption can be performed using symmetric and asymmetric key cryptography techniques of which symmetric algorithms encrypt and decrypt a message using the same key. If you hold a key, you can exchange messages with peers holding the same key. Several symmetric key algorithms are used among which Blowfish Encryption Algorithm, Data Encryption Standard (DES), 3DES (Triple DES), Advanced Encryption Standard (AES) are major concern of this paper.
Networks in organisation are dynamic and complex entities which can be quite challenging to configure and manage. (Kim & Feamster 2013). These corporate networks consist of multiple routers, switches, firewalls, middleboxes and a particular advantage of network management is the ability to monitor the entire business network. As all the devices are interconnected with many event occurring simultaneously, problems with once device can eventually lead and spread throughout...
Due to the demand for the internet to be fast, networks are designed for maximum speed, rather than to be secure or track users (“Interpol” par. 1). The adage of the adage.... ... middle of paper ... ...
The data mining process will use the mapping function which involved the decision tree and also the neural network to develop. It needs the web server and the database server to be constructed in an operating database to record the browsing route of the users. The data mining will use to identify the user’s information and classify them into different classes using decision tree.