Building Secure Wireless Networks with 802 11 phần 1 ppsx

... 50 The 802. 11 Extensions 50 802. 11 b 50 802. 11 a 52 802. 11 g 53 802. 11 Shortcomings 54 Wireless Standards Comparison 55 Summary 55 Chapter 4: Is Wireless LAN Right for You? 56 Benefits of Wireless ... Advanced 802. 11 Wireless LANs 16 0 High Security and Authentication−Enabled 802. 11 Wireless LANs 16 0 The 802. 1X Standard 16 0 Virtual Private Netwo...

Ngày tải lên: 14/08/2014, 14:20

... the 802. 11 b standard with the 802. 11 a. Table 8.2: 802. 11 b Compared with 802. 11 a TECHNOLOGY STANDARD MAXIMUM SPEED FREQUENCY BAND GEOGRRAPHIC RANGE 802. 11 b 11 Mbps 2.4 GHz 300 meters 802. 11 a 54 ... on 802. 11 b NETGEAR MA4 01 802. 11 B WIRELESS PC CARD FEATURES DESCRIPTION Data Rates 1, 2, 5.5, and 11 Mbps Operating Range Indoor: 17 5 ft @ 11 Mbps...

Ngày tải lên: 14/08/2014, 14:20

... this chapter. Initially, 802. 11 standard−based wireless LANs operated at 1 megabit per second (Mbps). Eventually, 802. 11 b—also known as wireless fidelity, or Wi−Fi, or 802. 11 high rate, which is ... bytes=32 time< ;10 ms TTL =12 8 Reply from 19 2 .16 8.0.2: bytes=32 time< ;10 ms TTL =12 8 Reply from 19 2 .16 8.0.2: bytes=32 time< ;10 ms TTL =12 8 Reply from 19 2 ....

Ngày tải lên: 14/08/2014, 14:20

... include 802. 11 b, 802. 11 a, 802. 11 g, and 802. 11 e. We discuss the extensions in the order of their popularity, development status, and general acceptance. 802. 11 b 802. 11 b is an extension to 802. 11 that ... Offered by 802. 11 b over 802. 11 The 802. 11 b extension was the product of the 802. 11 task group b and was approved in 19 99 .802. 11 b ratifies...

Ngày tải lên: 14/08/2014, 14:20

... used to secure wireless LANs. We talk about security requirements of wireless LANs, the IEEE 802. 11 security architecture, the shortcomings of 802. 11 security protocols, the future of 802. 11 security, ... available wireless LAN technologies. The main security issue with wireless networks, especially radio−frequency−based networks (for example, 802. 11 based...

Ngày tải lên: 14/08/2014, 14:20

... any changes to your RG 10 00 unless 15 4 Chapter 10 : Advanced 802. 11 Wireless LANs Wireless LANs based on basic 802. 11 standard technologies, for example 802. 11 b and 802. 11 a, provide a level of ... a bit more secure. To use 802. 1X in an 802. 11 wireless LAN, you must use the following components: 802. 11 a− or 802. 11 b−compliant wireless LAN adapter(s)...

Ngày tải lên: 14/08/2014, 14:20

... (for example, 11 1 .11 1 .11 1 .11 1 ) of the computer to which you want to connect, and then click Next. Figure 10 .13 shows the VPN server identification settings screen. 7. 17 2 Upgrading Wireless LANs Upgrading ... Systems, make wireless LAN APs that can provide both 802. 11 b and 802. 11 a wireless AP services. If you already have a wireless LAN that uses 802. 11 b a...

Ngày tải lên: 14/08/2014, 14:20

... level of wireless LAN security assigned to the 802. 11 b wireless LAN specification. 203 Data Privacy The data in a wireless LAN is vulnerable to tampering and spoofing. An adversary within the ... enjoy wireless networking with Lucent's 2.4−GHz, IEEE 802. 11 b Direct Sequence Spread Spectrum wireless Ethernet standard. No other campus of this size has such complete cover...

Ngày tải lên: 14/08/2014, 14:20

... Based on 802. 11 b Table 8 .10 : NETGEAR Products Based on 802. 11 a Table 8 .11 : Xircom Products Based on 802. 11 b Table 8 .12 : Xircom Products Based on 802. 11 a Chapter 10 : Advanced 802. 11 Wireless LANs Table ... 8.5: Major 802. 11 b Products Table 8.6: The major ORiNOCO products based on 802. 11 Table 8.7: 5−GHz Migration Products Based on 802. 11 b Table 8.8...

Ngày tải lên: 14/08/2014, 14:20

... Figure 7.3 11 0 controlled port state to authorize. Using 802. 1X to Solve the 802. 11 WEP Security Issues The basic 802. 1X protocol must be extended to address security issues of 802. 11 . This is ... adapter does not work with an 802. 11 a−based AP. It is important to realize that a wireless LAN that consists of 802. 11 b is a totally separate LAN from one constructed u...

Ngày tải lên: 14/08/2014, 14:21