O''''Reilly-802.11 Wireless Networks - The Definitive Guide

802.11® Wireless Networks: The Definitive Guide phần 1 pot

802.11® Wireless Networks: The Definitive Guide phần 1 pot
... Applied by 802 .11 a Section 11 .3 OFDM PLCP Section 11 .4 OFDM PMD Section 11 .5 Characteristics of the OFDM PHY Chapter 12 Using 802 .11 on Windows Section 12 .1 Nokia C 110 /C 111 Section 12 .2 Lucent ORiNOCO ... 10 .1 802 .11 FH PHY Section 10 .2 802 .11 DS PHY Section 10 .3 802 .11 b: HR/DSSS PHY Chapter 11 802 .11 a: 5-GHz OFDM PHY Section 11 .1 Orthogonal Frequency Division Multiplexing (OFDM) Section 11 .2 OFDM ... Section 15 .1 The Topology Archetype Section 15 .2 Project Planning Section 15 .3 The Site Survey Section 15 .4 Installation and the Final Rollout Chapter 16 802 .11 Network Analysis Section 16 .1 Why...
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802.11® Wireless Networks: The Definitive Guide phần 2 ppsx

802.11® Wireless Networks: The Definitive Guide phần 2 ppsx
... first, which is the reverse of the order used in Figure 3-10 Therefore, the frame type is the third bit in the frame control field followed by the second bit (b3 b2), and the subtype is the seventh ... check the integrity of received frames All fields in the MAC header and the body of the frame are included in the FCS Although 8 02. 3 and 8 02. 11 use the same method to calculate the FCS, the MAC ... that the recipient of the frame can send the acknowledgment Because the sequence concludes with the ACK, no further virtual carrier locking is necessary, and the NAV in the ACK is set to 3.7 .2. 2...
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802.11® Wireless Networks: The Definitive Guide phần 3 doc

802.11® Wireless Networks: The Definitive Guide phần 3 doc
... equal to the length of the frame body plus the IV The keystream is then XORed with the frame body and the IV to cipher it To enable the receiver to decrypt the frame, the IV is placed in the header ... "Weaknesses in the Key Scheduling Algorithm of RC4." At the end of the paper, the authors describe a theoretical attack on WEP At the heart of the attack is a weakness in the way that RC4 generates the ... shows the encapsulation on a wired Ethernet, so the MAC header consists of the destination MAC address and the source MAC address On a wireless network, the MAC header would be the 24- to 30 -byte...
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802.11® Wireless Networks: The Definitive Guide phần 4 pot

802.11® Wireless Networks: The Definitive Guide phần 4 pot
... (2 .40 2-2 .47 9 GHz) Europe (excluding France and Spain) (ETSI) to 79 (2 .40 2-2 .47 9 GHz) France 48 to 82 (2 .44 8-2 .48 2 GHz) Spain 47 to 73 (2 .44 7-2 .47 3 GHz) Japan (MKK) 73 to 95 (2 .47 3-2 .49 5 GHz) The ... by the access point to all the stations associated with its BSS, so the second address field is the BSSID In infrastructure networks, the BSSID is the address of the wireless interface in the ... field causes a magnetic field, and the wave is off The size of the antenna you need depends on the frequency: the higher the frequency, the smaller the antenna The shortest simple antenna you can...
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802.11® Wireless Networks: The Definitive Guide phần 5 pptx

802.11® Wireless Networks: The Definitive Guide phần 5 pptx
... 5. 180 U-NII lower band 40 mW 40 5. 200 (5. 15- 5. 25 GHz) (2 .5 mW/MHz) 44 5. 220 48 52 5. 240 5. 260 U-NII mid-band 200 mW 56 5. 280 (5. 25- 5. 35 GHz) (12 .5 mW/MHz) 60 5. 300 64 5. 320 Table 11-1 United States ... 149 5. 7 45 Band U-NII upper band 800 mW 5. 7 65 157 5. 7 85 161 (5. 7 25- 5.8 25 GHz) (50 mW/MHz) 153 5. 8 05 [a] The allowed power is the maximum output power using a 6-dBi antenna gain There is one other ... (PLW) The first field in the PLCP header is the PLW The payload of the PLCP frame is a MAC frame that may be up to 4,0 95 bytes long The 12-bit length field informs the receiver of the length of the...
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802.11® Wireless Networks: The Definitive Guide phần 6 ppt

802.11® Wireless Networks: The Definitive Guide phần 6 ppt
... does At the top of the dialog box there are fields for selecting the SSID (network name) and the key number to which the key applies The bottom part of the screen shows the key length and the key ... Figure 12- 26 Profile creation Next, identify the network As with other products, the network name is the SSID of the network You can either type it into the network name field or use the Scan button ... up the main profile window, shown in Figure 12-25 Click on the Add button to begin creating the profile The dialog box shown in Figure 12- 26 appears Name the profile on the lefthand side of the...
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Tài liệu Guide to Securing Legacy IEEE 802.11 Wireless Networks ppt

Tài liệu Guide to Securing Legacy IEEE 802.11 Wireless Networks ppt
... D lists legacy IEEE 802.11 WLAN references Appendix E lists legacy IEEE 802.11 WLAN online resources 1-2 GUIDE TO SECURING LEGACY IEEE 802.11 WIRELESS NETWORKS Overview of IEEE 802.11 Wireless ... including IEEE 802.11r, IEEE 802.11k, and IEEE 802.11y A-5 Availability The standard is under development and is expected to be completed and ratified in 2008 GUIDE TO SECURING LEGACY IEEE 802.11 WIRELESS ... as http://grouper .ieee. org/groups/802/11/QuickGuide _IEEE_ 802_WG_and_Activities.htm and http://standards .ieee. org/getieee802 2-1 GUIDE TO SECURING LEGACY IEEE 802.11 WIRELESS NETWORKS of the problems...
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