Wireless network security

In this article, we have researched, compared and evaluated current methods for solving problems such as data augmentation, data generation via generative networks and classing importance control. Additionally, we will also provide a brief overview of existing datasets for intrusion detection in wireless networks.

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This thesis proposes and implements a new and novel solution on simulators and real devices to solve the mobility problem in a VPN. The new solution adds mobility support to existing L2TP/IPsec (Layer 2 Tunneling Protocol/IP Security) tunnels. The new solution tunnels Layer 2 packets between VPN clients and a VPN server without using Mobile IP, without incurring tunnel-re-establishment at handoff, without losing packets during handoff, achieves better security than current mobility solutions for VPN, and supports fast handoff in IPv4 networks.

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Chapter 5 - Wireless security. After studying this chapter you will be able to understand: Wireless concepts, Securing digital cellular telephony, wireless application protocol, wireless transport layer security, hardening wireless local area networks, IEEE 802.11, wired equivalent privacy (WEP).

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In this chapter: Describe wireless LAN technology and standards, describe the components of a wireless LAN infrastructure, describe wireless topologies, describe the 802.11 frame structure, describe the media contention method used by wireless technology,... Inviting you to refer.

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After studying this chapter you will be able to: Describe wireless LAN technology and standardsm, describe the components of a wireless LAN infrastructure, describe wireless topologies, describe the 802.11 frame structure,...and another content.

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This chapter summarize the operation of Ethernet as defined for 100/1000 Mbps LANs in the IEEE 802.3 standard; explain the functions that enable a switch to forward Ethernet frames in a LAN; configure a switch for operation in a network designed to support voice, video, and data transmissions.

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IEEE 802.11 is a set of standards for implementing wireless local area network (WLAN) computer communication in the 2.4, 3.6, 5 and 60 GHz frequency bands. They are created and maintained by the IEEE LAN/MAN Standards Committee (IEEE 802). The base version of the standard was released in 1997 and has had subsequent amendments. These standards provide the basis for wireless network products using the Wi-Fi brand.

18p muathu_102 28-01-2013 57 5   Download

Wireless technology has enormous potential to change the way people and things communicate. Future wireless networks will allow people on the move to communicate with anyone, anywhere, and at any time using a range of high-performance multimedia services. Wireless video will support applications such as enhanced social networking, distance learning and remote medicine. Wireless sensor networks can also enable a new class of intelligent home electronics, smart and energy-efficient buildings and highways, and in-body networks for analysis and treatment of medical conditions....

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A WLAN is a shared network. An access point is a shared device and functions like a shared Ethernet hub. Data is transmitted over radio waves. Two-way radio communications (half-duplex) are used. The same radio frequency is used for sending and receiving (transceiver).

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WPA: A rush solution to the security problems of WEP WPA2: Based on 802.11i (official version) Encrypt and authenticate MSDUs: counter mode-CBC MAC protocol with AES-128 Authenticate STAs: 802.1X Initialization vectors transmitted in plaintext are no longer needed to generate per-frame keys But most of the existing Wi-Fi WPA cards cannot be upgraded to support 802.11i

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Radio based communication, open air The attacker, having a radio transmitter and receiver with the same radio frequency of the underlying wireless network, can easily: Intercept wireless data Connect his computing devices to a nearby wireless network Inject new packets to an existing wireless network Jam a particular wireless channel using a jamming device Security measures Implement encryption algorithms, authentication algorithms, and integrity-check algorithms at the data-link layer Provide network access with wired equivalent privacy Higher-layer protocols and applications can be used ...

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Tham khảo bài thuyết trình 'buffer overflow', công nghệ thông tin, an ninh - bảo mật phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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In computing, a denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a machine or network resource unavailable to its intended users.

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Tham khảo bài thuyết trình 'sniffers', công nghệ thông tin, an ninh - bảo mật phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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An enumeration of a collection of items is a complete, ordered listing of all of the items in that collection. The term is commonly used in mathematics and theoretical computer science to refer to a listing of all of the elements of a set. In statistics the term categorical variable is used rather than enumeration. The precise requirements for an enumeration (for example, whether the set must be finite, or whether the list is allowed to contain repetitions) depend on the branch of mathematics and the context in which one is working....

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Network scanning is a procedure for identifying active hosts on a network, either for the purpose of attacking them or for network security assessment. Scanning procedures, such as ping sweeps and port scans, return information about which IP addresses map to live hosts that are active on the Interne

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Tham khảo bài thuyết trình 'module 20 hacking wireless networks', công nghệ thông tin, an ninh - bảo mật phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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Attempt at communication using non-physical links. Examples Radio Waves Light Pulses Often used for networking, but can be used simply to eliminate wires for device to device communication.

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•As PC became more common, it became obvious one would need to share data and peripherals between them efficiently.Floppy discs could not be the solution. Hence the idea of a network.•The necessities to have one database that many users can access simultaneously made networking very relevant.•Great demand to share devices ( e.g. printer sharing in companies).

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McGraw-Hill is an independent entity from Planet3 Wireless and is not affiliated with Planet3 Wireless in any manner. This publication may be used in assisting students to prepare for the CWNA Exam. Neither Planet3 Wireless nor McGraw-Hill warrant that use of this publication will ensure passing any exam. CWNA and CWNP are registered trademarks of Planet3 Wireless in the United States and/or other countries.

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