Wireless Networks dor Dummies phần 4 ppsx

... Configure security options. 4. Configure Outlook Web Access compression. 142 Part II: Implementing Your Wireless Network 12_575252 ch08.qxd 9/2/ 04 4:01 PM Page 142 Peripheral Component Interconnect ... vehicle using your wireless network card and your friend driving close behind or beside you. 1 34 Part II: Implementing Your Wireless Network 12_575252 ch08.qxd 9/2/ 04 4:01 PM...

Ngày tải lên: 14/08/2014, 14:20

... . . . . . . . . . . . . . . . . . . . . . . . . 347 802.1x 347 802.11 348 802.11a 348 802.11b 348 802.11c 349 802.11d 349 802.11e 349 802.11f 349 802.11g 350 802.11h 350 802.11i 350 802.11j 350 802.11k ... Organizations 341 International Standards Organizations 342 Wireless- Related Organizations and Associations 343 Local Wireless Groups 345 Other Industry Associations 346 Ap...

Ngày tải lên: 14/08/2014, 14:20

... connectivity but also wireless hot spot roaming, extending your ability to remain connected. 144 Part II: Implementing Your Wireless Network 12_575252 ch08.qxd 9/2/ 04 4:01 PM Page 144 You can set up ... key. 64- bit WEP is the same as 40 -bit WEP! The lowest level of WEP uses a 40 -bit user key with the 24- bit IV. It’s just that some vendors refer to this level of WEP as 40 -bit...

Ngày tải lên: 14/08/2014, 14:20

... 1012 141 618 0 1 2 3 4 a - Drop Tail 8 1012 141 8 0 1 2 3 4 b - Random Drop 01 a - Drop tail 8 1012 141 61 0 1 2 3 4 b - Random drop Node 5 throughput (%) Node 5 throughput (%) Buffer sizeBuffer size 46 81012 0 1 2 3 4 c ... cellular wireless networks, Wireless Networks, vol. 1, no. 4, 1995. [17] H. Balakrishnan, V.N. Padmanabhan, S. Seshan and R. Katz, A comparison of mech- a...

Ngày tải lên: 14/08/2014, 09:21

... connected to Wired LAN Figure 3-1: Examples of wireless networks. 48 Part I: Planning and Acquiring Your Network 06_575252 ch03.qxd 9/2/ 04 3: 54 PM Page 48 ߜ What technology do I want to use? Or, ... loss: – 84. 34 dB. ߜ Receiver antenna gain: +6 dBi. ߜ Receiver-side coaxial cable and connector loss: –0.90 dB. 43 Chapter 2: If You Fail to Plan, You Plan to Fail 05_575252 ch02.qx...

Ngày tải lên: 14/08/2014, 14:20

... model number SMC2804WBR. All wireless routers and access points have similar steps. 84 Part II: Implementing Your Wireless Network 09_575252 ch05.qxd 9/2/ 04 3:57 PM Page 84 To establish an infrared ... security features. Figure 4- 6: BlueGear Advanced Settings dialog box. 73 Chapter 4: Getting a Quick Start with Wireless Personal Area Networks 08_575252 ch 04. qxd 9/2/ 04 3:5...

Ngày tải lên: 14/08/2014, 14:20

... sequences as default keys: 10 11 12 13 14 21 22 23 24 25 31 32 33 34 35 41 42 43 44 45 It is not surprising that a vendor has such simple default keys. What is sur- prising is that the first key ... ch11.qxd 9/2/ 04 4: 04 PM Page 192 The IV is a part of the RC4 encryption key. The fact that an eavesdropper knows 24 bits of every packet key, combined with a weakness in the RC4 ke...

Ngày tải lên: 14/08/2014, 14:20

... Troubleshooting 20_575252 ch 14. qxd 9/2/ 04 4:08 PM Page 2 54 Chantry Networks (www.chantrynetworks.com), Cisco Systems (www.cisco. com ), Extreme Networks (www.extremenetworks.com), Gateway Inc. ... Troubleshooting 20_575252 ch 14. qxd 9/2/ 04 4:08 PM Page 256 5. Click the Wireless Networks tab. Configure your wireless connection to match the access point you will bridge usin...

Ngày tải lên: 14/08/2014, 14:20

... to detect wireless networks. It’s 11 p.m. — do you know where your access points are? 306 Part V: The Part of Tens 24_ 575252 ch17.qxd 9/2/ 04 4:11 PM Page 306 (the figure is showing 4. 6 percent). ... tab. 3. Enable Channels 1– 14. 2 94 Part IV: Keeping Your Network on the Air — Administration & Troubleshooting 22_575252 ch16.qxd 9/2/ 04 4:10 PM Page 2 94 Detecting Wireless...

Ngày tải lên: 14/08/2014, 14:20

... C -4 Frequency and Channels Channel Frequency Channel Frequency 1 2 .41 2 GHz 8 2 .44 7 GHz 2 2 .41 7 GHz 9 2 .45 2 GHz 3 2 .42 2 GHz 10 2 .45 7 GHz 4 2 .42 7 GHz 11 1 2 .46 2 GHz 5 2 .43 2 GHz 12 2 .46 7 GHz 6 2 .43 7 ... 3.2 W 16 40 mW 36 4 W 17 50 mW 37 5 W 18 64 mW 38 6 .4 W 19 80 mW 39 8 W 30_575252 appc.qxd 9/3/ 04 8 :40 AM Page 3 64 388 Wireless Networks For Dummies Wi...

Ngày tải lên: 14/08/2014, 14:20