Thomas Maufer's A Field Guide to Wireless LANs for Administrators and Power PDF

By Thomas Maufer

ISBN-10: 0131014064

ISBN-13: 9780131014060

During this booklet, best-selling networking writer Thomas Maufer explains how instant LANs paintings, and the way to lead them to paintings for you-reliably and securely. Maufer takes you below the hood with modern day newest WLAN applied sciences, delivering functional perception and context for deploying, handling, and troubleshooting WLANs in any setting, from the firm to the home.Covers all prime IEEE 802.11 instant criteria: 802.11a, 802.11b, 802.11g, and 802.11i/WPAShows how one can installation small, mid-sized, huge, public, enterprise, and residential networksProvides pattern Windows(R), Linux(R), and MacOS(R) configurations that assist you start quicklyDemystifies WLAN defense so that you can know how to guard your dataIlluminates the 802.11 protocol so that you can troubleshoot extra effectivelyPreviews tomorrow's WLAN criteria and functions for enterprise and residential (IEEE 802.11j and 802.11n)Whether you are a network/system administrator or an influence consumer, Thomas Maufer demystifies instant LAN technology... so that you can maximize the advantages whereas minimizing the hassles.

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Extra info for A Field Guide to Wireless LANs for Administrators and Power Users

Sample text

Even in this latter case, however, the Data Link layer is unaware of the structure or contents of the frame. The Network layer provides for end-to-end addressing, and a Network layer path can encompass many different types of Data Link layers. The Network layer protocol can be either connection-oriented or connectionless. Due to the ever-increasing deployment of the IP (which is connectionless), it is becoming more difficult to find real-world examples of connection-oriented Network layer protocols.

2 SNAP sub-layer protocol. 2 SNAP headers (although to differentiate itself from IPv4, IPv6 uses a Type value of 0x86DD, compared to IPv4's Type value of 0x0800). Figure 2-5 illustrates the common protocol stack used when TCP/IP packets are transported over any IEEE 802 LAN medium. As indicated in the diagram, both IPv4 and IPv6 share the same basic encapsulation. 11 is highlighted. Figure 2-5. 3 Ethernet (with the "Length" as opposed to "Type" interpretation of the frame), the protocol stack using the LLC sub-layer is used.

Figure 2-1 shows the complete seven-layer protocol stack defined by the OSI-RM. [4] A device that implements a Physical layer protocol is frequently referred to verbally and written shorthand, namely as a "PHY" device. Figure 2-1. OSI Reference Model In most cases, a layer has well-defined interfaces that are used to either accept data from higher layers, or to indicate the presence of data to a higher layer. Typically, there are also control interfaces between the layers that allow a higher layer to configure a lower layer according to administrative preferences, operating conditions, and so forth.

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A Field Guide to Wireless LANs for Administrators and Power Users by Thomas Maufer


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