Wireless Networks dor Dummies phần 3 docx

... place. Figure 5-6: Enabling wireless access and setting the SSID and channel. 93 Chapter 5: Moving On to a Wireless LAN: Your Wireless Access Point 09_575252 ch05.qxd 9/2/04 3: 57 PM Page 93 Also worthwhile ... Infrared devices and then click Next. 63 Chapter 4: Getting a Quick Start with Wireless Personal Area Networks 08_575252 ch04.qxd 9/2/04 3: 56 PM Page 63 find non-dis...

Ngày tải lên: 14/08/2014, 14:20

... where 1 V 2 2 V 4 V 5 V 3 V 6 V 1 4 4 1 3 1 3 1 V 2 2 V 4 V 5 V 3 V 6 V 1 4 4 1 3 1 3 1 V 2 2 V 4 V 5 V 3 V 6 V 1 4 4 1 3 1 3 Figure 7.4 Illustration of a walk. JWBK0 83- 05 JWBK0 83- Glisic February 23, 2006 3: 39 Char ... the OIY JWBK0 83- 07 JWBK0 83- Glisic February 23, 2006 3: 50 Char Count= 0 GRAPHS AND ROUTING PROTOCOLS 201 2 3 4 1 3 1 1 2.5 Graph 2 3 4 1 3...

Ngày tải lên: 14/08/2014, 09:21

... .34 7 802.1x 34 7 802.11 34 8 802.11a 34 8 802.11b 34 8 802.11c 34 9 802.11d 34 9 802.11e 34 9 802.11f 34 9 802.11g 35 0 802.11h 35 0 802.11i 35 0 802.11j 35 0 802.11k 35 1 802.11n 35 1 802.15 35 1 802.16 35 2 xix Table ... . . . .35 3 Radio Frequency 35 3 Behavior of Radio Waves 36 0 Gain 36 0 Loss 36 0 Reflection 36 1 Refraction 36 1 Diffraction 36 1 Scattering 36 1...

Ngày tải lên: 14/08/2014, 14:20

... http://seattlewireless.net/index. cgi/DirectionalYagi . Figure 3- 3: Examples of antennae. 55 Chapter 3: Matching Wireless Technologies to Your Plan 06_575252 ch 03. qxd 9/2/04 3: 54 PM Page 55 At ... network consists of in the wireless Figure 3- 2: Example of BSS, DSS, and ESS interaction. 51 Chapter 3: Matching Wireless Technologies to Your Plan 06_575252 ch 03. qxd 9/2/04 3: 5...

Ngày tải lên: 14/08/2014, 14:20

... Control and Provisioning of Wireless Access Points (capwap) working group. 132 Part II: Implementing Your Wireless Network 11_575252 ch07.qxd 9/2/04 3: 59 PM Page 132 Outlook Mobile Access provides ... difficult and expensive to connect between vendors’ wireless networks. This is less because of technical reasons than pure marketing and cost-sharing issues. Vendors such as T-Mobil...

Ngày tải lên: 14/08/2014, 14:20

... to maximize ROSI: 1 83 Chapter 10: Designing a Secure Network 15_575252 ch10.qxd 9/2/04 4: 03 PM Page 1 83 Chapter 9 Considering a Deadbolt: Understanding the Risks of Wireless Networks In This Chapter ᮣ ... their wireless networks. That’s a troubling statement, especially given that wireless net- working and mobile computing are two of the fastest growing technologies since the I...

Ngày tải lên: 14/08/2014, 14:20

... following four WEP 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 ... to implement wireless VLANs. There are many vendor products, including Cisco’s Aironet 1200 and Symbol’s WS 5000 Wireless Switch. To implement this functionality, you need both the spe...

Ngày tải lên: 14/08/2014, 14:20

... or other items that can impact a signal. 233 Chapter 13: Problems with Keeping on the Air 19_575252 ch 13. qxd 9/2/04 4:07 PM Page 233 Chapter 14 Bridging Networks to Manage Coverage In This Chapter ᮣ ... repeater mode. Figure 14 -3 shows a bridge in repeater mode. Wireless Workgroup Bridge A device that is similar to a wireless bridge, and often confused with it, is the wireless...

Ngày tải lên: 14/08/2014, 14:20

... wireless networks, only to find out they did. This chapter is for those who acknowledge that they have wireless networks installed (and for those who don’t). Discovering the Extent of Your Wireless ... (host- or target-based IDS) and networks (network-based IDS). More recently, vendors have developed a wireless intrusion detection system (WIDS) for wireless networks. A WIDS c...

Ngày tải lên: 14/08/2014, 14:20

... point), 53 DSSS, 49, 238 , 35 5 802.11, 36 0 802.11a, 53, 34 8, 35 5, 35 9, 36 0 802.11b, 53, 34 8, 35 5, 35 9, 36 0 802.11g, 53, 35 5, 35 6, 35 9, 36 0 introduced, 53 modulation, 68, 35 5 35 6 OFDM, 30 , 49, 238 , 34 4 phase ... frequency) antenna, 35 3, 36 0, 36 5, 36 6, 36 7 36 8 attenuation, 35 6 35 7, 35 8 blockage, 33 channel capacity, 35 7 35 9 coverage, su...

Ngày tải lên: 14/08/2014, 14:20