Building Secure Wireless Networks with 802 11 phần 3 docx

... include 802. 11b, 802. 11a, 802. 11g, and 802. 11e. We discuss the extensions in the order of their popularity, development status, and general acceptance. 802. 11b 802. 11b is an extension to 802. 11 that ... Offered by 802. 11b over 802. 11 The 802. 11b extension was the product of the 802. 11 task group b and was approved in 1999 .802. 11b ratifies to the original 802. 1...

Ngày tải lên: 14/08/2014, 14:20

... 233 Chapter 10: Advanced 802. 11 Wireless LANs 233 Chapter 11: Troubleshooting Wireless LANs 233 Chapter 12: Keeping Your Wireless LAN Secure 233 List of Sidebars 234 Chapter 12: Keeping Your Wireless ... 29 Summary 30 Chapter 2: Wireless LANs 31 Highlights 31 Evolution of Wireless LANs: An Overview 31 A Basic Wireless LAN 32 Basic Architecture of a Wireles...

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. 11b—also known as wireless fidelity, or Wi−Fi, or 802. 11 high rate, which is ... constitute a wireless LAN are examined in detail. Then wireless networks are compared with wired networks. Finally we cover the existing standards in wireless LAN technolo...

Ngày tải lên: 14/08/2014, 14:20

... available wireless LAN technologies. The main security issue with wireless networks, especially radio−frequency−based networks (for example, 802. 11 based networks) , is that the wireless networks ... 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 proto...

Ngày tải lên: 14/08/2014, 14:20

... the 802. 11b standard with the 802. 11a. Table 8.2: 802. 11b Compared with 802. 11a TECHNOLOGY STANDARD MAXIMUM SPEED FREQUENCY BAND GEOGRRAPHIC RANGE 802. 11b 11 Mbps 2.4 GHz 30 0 meters 802. 11a 54 ... 802. 11b and IEEE 802. 11a. The IEEE 802. 11b standard operates at speeds up to 11 Mbps. Following are the highlights of 802. 11b. 802. 11a standard devices operate at up...

Ngày tải lên: 14/08/2014, 14:20

... a bit more secure. To use 802. 1X in an 802. 11 wireless LAN, you must use the following components: 802. 11a− or 802. 11b−compliant wireless LAN adapter(s).• Software drivers for the wireless LAN ... your RG−1000 unless 154 Chapter 10: Advanced 802. 11 Wireless LANs Wireless LANs based on basic 802. 11 standard technologies, for example 802. 11b and 802. 11a, provid...

Ngày tải lên: 14/08/2014, 14:20

... Systems, make wireless LAN APs that can provide both 802. 11b and 802. 11a wireless AP services. If you already have a wireless LAN that uses 802. 11b and you want to upgrade to 802. 11a wireless LANs, ... (for example, 111 .111 .111 .111 ) 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...

Ngày tải lên: 14/08/2014, 14:20

... PCMCIA slot (if necessary). Security As with any wireless network, security is of concern to M 33 Access and its users. To provide wireless security, M 33 encourages its customers to activate ... level of wireless LAN security assigned to the 802. 11b wireless LAN specification. 2 03 Data Privacy The data in a wireless LAN is vulnerable to tampering and spoofing. An adversary wi...

Ngày tải lên: 14/08/2014, 14:20

... Based on 802. 11a Table 8 .11: Xircom Products Based on 802. 11b Table 8.12: Xircom Products Based on 802. 11a Chapter 10: Advanced 802. 11 Wireless LANs Table 10.1: A Sample Network Address Table with ... 8.2: 802. 11b Compared with 802. 11a Table 8 .3: Common Ethernet Standards Table 8.4: Popular RADIUS Server Vendors Table 8.5: Major 802. 11b Products Table 8.6: The major OR...

Ngày tải lên: 14/08/2014, 14:20

... computer system with Windows 3. 1 installed and you are using 802. 11b wireless LAN technology, it is most likely that the drivers for the 802. 11b might not be available for Windows 3. 1 and you should ... and guides you through building secure wireless LANs using the 802. 11 standard. We have divided the process of building a wireless LAN into three separate steps: plan...

Ngày tải lên: 14/08/2014, 14:21