being introduced regularly to implement, enhance, detect, combat, secure, and add value to this resource. The most vulnerable part of your network may not be the limita- tions of technology, and are nontechnical. In addition to the available solutions for the[r]
Energy efficiency is one of the key requirements in many WSN applications. This is partic- ularly crucial for WSN deployed in inaccessible or disaster environments in which battery recharging and replacement is not a viable option. Thus, in this chapt[r]
resources when possible. Furthermore, Scalable Source Routing (SSR) proposed in (Fuhrmann, 2005) is a fully self-organizing protocol for efficient routing in large random networks. In the paper, the authors also point out disadvantage[r]
IP address spoofing IP fragmentation attack network ID and subnet mask, uses IP address restric tion. Access may then be either allowed or denied for each address or block of addresses. Another example is the Apache Web server, where access to Web content can be controlled usi[r]
While some network providers may own resources only at one or two neighboring layers, some large network providers own all of the layers. For the latter, it is essential to address the design of multi-layer networks. Consider the network example depicted in Figur[r]
Bài giảng Mạng máy tính nâng cao - Chương 13: Firewall bao gồm những nội dung về Firewalls (Stateless packet filtering, Stateful packet filtering, Application Gateways); Intrusion Detection Systems (IDS), Denial of Service Attacks.
Adaptive algorithms based on in-network processing of distributed observations are well- motivated for online parameter estimation and tracking of (non)stationary signals using peer-to-peer WSNs. To this end, a fully distributed least mean-square (D-LMS)[r]
As previously mentioned WiWi clusters act as a single node. This is done in order to reach redundancy as well as load balance. In fact WiWi requires that each cluster independently organize itself by ordering its nodes. By ordering a node belonging to the c[r]
In this paper, we propose an improvement of our previous protocol for geographic routing in wireless sensor networks. The original protocol uses a combination of greedy forwarding and recovery strategies for route discovery. At the same time, shortcut paths are created and then each of these paths i[r]
5. NUMERICAL AND SIMULATION RESULTS In the current setup, 100 nodes are deployed with uniform distribution in a square area of 100 square units. We use the Bellman-Ford routing algorithm to obtain the spanning tree, as in [2, 6, 7], considering the sink node as t[r]
Chapter 6 - Wireless internet and m-business. In this chapter we will discuss: Wireless devices, m-business, wireless internet access, wireless web technology, software applications for wireless devices, wireless local area networks (WLANs), bluetooth, wireless communications, location tracking, fut[r]
Figure 2.4: The basic idea underlying TC-DSA Our simulation results in chapter 5 show that TC-DSA achieves significantly higher performance when compared with SPAN. For further clarification, the basic idea underlying the proposed scheme is de- scribed using Fig.2.4. In th[r]
The aforementioned results all require an important as- sumption that sensor observation noises are spatially uncor- related. Unfortunately, this assumption can be restrictive in a practical WSN, especially when sensors are densely deployed. In this paper, we consider dis[r]
5. An Anti-Windup solution to Robust Power Control Consider a WSN implementing power control in a distribute manner and subject to practical hardware limitations as per any deployment of this nature. The focus here is placed on assessing the effect that[r]
The eleventh paper entitled, “On the design of error cor- recting ciphers,” authored by Chetan Nanjunda Mathur et al., designs an error correcting cipher and proves bounds on its error correcting capacity as well as its security. In summary, all eleven papers included in this sp[r]
On average, crypting services cost US$10–15. Offerings costing US$6 and US$50 can, however, also be found, depending on what kind of crypting service is required and how complicated the service is. Polymorphic crypters, which usually encrypt .EXE and .DLL files, cost more. C[r]
automatic assignment method. However, this would require extensions to the network protocols and thus increase network complexity and protocol overheads. † Market-based reservation charging. This method entails an auctioning procedure for acquiring network resources. Users place monetary[r]
There is a common problem in energy efficiency considerations in wireless sensor networks (WSNs): maximizing the amount of data sent from all sensor nodes to the base station (BS) unti[r]
1. Introduction There is rapidly growing interest over the last decade on the topics of energy harvesting devices as a means to provide an alternative to batteries as a power source for medical implants, embedded sensor applications such as buildings or in[r]
3.4.3 Layering and Modularity One of the key design principles is that, in order to be readily implementa- ble, solutions should be simple and easy to understand. One way to achieve this is through layering. This is a structured way of dividing the functionality in[r]