Building Secure Wireless Networks with 802 11 phần 4 pot

... 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

... 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

... Configurations 40 Ad−Hoc Mode 40 Infrastructure Mode 40 Distribution Service Systems (DSSs) 40 Existing Wireless LAN Standards 42 IEEE 802. 11 42 IEEE 802. 11 b 42 IEEE 802. 11 a 42 HomeRF 42 Bluetooth 42 Are ... Group 45 The 802. 15 Working Group 45 The 802. 16 Working Group 46 The 802. 11 Family of Standards 46 The 802. 11 Standard Details 46...

Ngày tải lên: 14/08/2014, 14:20

... properties. Table 3.1: Popular 802 Wireless Standards STANDARD RF BAND MAXIMUM SPEED 802. 11b 2 .4 GHz ISM Band 11 Mbps 802. 11a 5−GHz UNII Band 54 Mbps 802. 11g 2 .4 GHz ISM Band 54 Mbps 802. 15.1 2 .4 GHz ISM Band ... incurs. In addition, 802. 11a networks are incompatible with the 802. 11b networks due to the difference in the radio frequency band used by 802. 11a (802...

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 300 meters 802. 11a 54 ... NetGear MA401 802. 11b Wireless PC Card Encryption Key Length 40 bit and 128 bit Security Protocols IEEE 802. 11 WEP (Wired Equivalent Privacy) NETGEAR MR3 14 802. 11B...

Ngày tải lên: 14/08/2014, 14:20

... changes to your RG−1000 unless 1 54 Chapter 10: Advanced 802. 11 Wireless LANs Wireless LANs based on basic 802. 11 standard technologies, for example 802. 11b and 802. 11a, provide a level of security ... 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).• Softw...

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. 172...

Ngày tải lên: 14/08/2014, 14:20

... enjoy wireless networking with Lucent's 2 .4 GHz, IEEE 802. 11b Direct Sequence Spread Spectrum wireless Ethernet standard. No other campus of this size has such complete coverage. Wireless ... level of wireless LAN security assigned to the 802. 11b wireless LAN specification. 203 Data Privacy The data in a wireless LAN is vulnerable to tampering and spoofing. An adversar...

Ngày tải lên: 14/08/2014, 14:20

... 802. 11b Table 8.8: Linksys Wireless Products Based on 802. 11b Table 8.9: NetGear Products Based on 802. 11b Table 8.10: NETGEAR Products Based on 802. 11a Table 8 .11: Xircom Products Based on 802. 11b Table ... 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 One Entry Chapte...

Ngày tải lên: 14/08/2014, 14:20

... 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: planning a wireless LAN, purchasing ... adapter does not work with an 802. 11a−based AP. It is important to realize that a wireless LAN that consists of 802. 11b is a totally separate LAN from one constructed us...

Ngày tải lên: 14/08/2014, 14:21