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Anleitung Zusammenfassung
Maintenance and Support NETGEAR offers the following features to help you maximize your use of the WNR834M router: • Flash memory for firmware upgrades • Free technical support seven days a week, twenty-four hours a day 2-6 Introduction v1.3, May 2006 Chapter 3 Wireless Configuration This chapter describes how to configure the wireless features of your WNR834M router. In planning your wireless network, you should consider the level of security required. You should also select the physical placement of your firewall in order to maximize the network speed. For further information on wireless networking, see “Wireless Communications” in Appendix B. Observing Performance, Placement, and Range Guidelines The operating distance or range of your wireless connection can vary significantly based on the physical placement of the wireless firewall. The latency, data throughput performance, and notebook power consumption of wireless adapters also vary depending on your configuration choices. Note: Failure to follow these guidelines can result in significant performance degradation or inability to wirelessly connect to the router. For complete range and performance specifications, please see “General Specifications” on page A-3. For best results, place your firewall: • Near the center of the area in which your computers will operate. • In an elevated location such as a high shelf where the wirelessly connected computers have line-of-sight access (even if through walls). • Away from sources of interference, such as computers, microwaves, and 2.4 GHz cordless phones. • Away from large metal surfaces. The time it takes to establish a wireless connection can vary depending on both your security settings and placement. WEP connections can take slightly longer to establish. Also, WEP, WPAPSK and WPA2-PSK encryption can consume more battery power on a notebook computer. Wireless Configuration v1.3, May 2006 NETGEAR RangeMax™ NEXT Wireless Router WNR834M Reference Manual Implementing Appropriate Wireless Security Note: Indoors, computers can connect over 802.11b/g wireless networks at ranges of up to 300 feet. Such distances can allow for others outside of your immediate area to access your network. Unlike wired network data, your wireless data transmissions can be received well beyond your walls by anyone with a compatible adapter. For this reason, use the security features of your wireless equipment. The WNR834M router provides highly effective security features which are covered in detail in this chapter. Deploy the security features appropriate to your needs. Figure 3-1 There are several ways you can enhance the security of your wireless network. • Restrict Access Based on MAC address. You can restrict access to only trusted computers so that unknown computers cannot wirelessly connect to the WNR834M. MAC address filtering adds an obstacle against unwanted access to your network, but the data broadcast over the wireless link is fully exposed. • Turn Off the Broadcast of the Wireless Network Name SSID. If you disable broadcast of the SSID, only devices that have the correct SSID can connect. This nullifies the wireless network ‘discovery’ feature of some products such as Windows XP, but the data is still fully exposed to a determined snoop using specialized test equipment like wireless sniffers. • WEP. Wired Equivalent Privacy (WEP) data encryption provides data security. WEP Shared Key authentication and WEP data encryption block all but the most determined eavesdropper. Wireless Configuration v1.3, May 2006 NETGEAR RangeMax™ NEXT Wireless Router WNR834M Reference Manual • WPA-PSK and WPA2-PSK. Wi-Fi Protected Access, Pre-Shared Key (WPA-PSK and WPA2-PSK) data encryption provide strong data security. WPA-PSK and WPA2-PSK block eavesdropping. Because these are new standards, wireless device driver and software availability may be limited. • Turn Off the Wireless LAN. If you disable the wireless LAN, wireless devices cannot communicate with the router at all. You might choose to turn off the wireless LAN when you are away and other users of your network all use wired connections. Information to Gather Before Changing Basic Wireless Settings Before customizing your wireless settings, print this form and record the following information. If you are working with an existing wireless network, the person who set up or is responsible for the network will be able to provide this information. Otherwise, you must choose the settings for your wireless network. Either way, record the settings for your wireless network in the spaces below. • Wireless Network Name (SSID): ______________________________ The SSID identifies the wireless network. You can use up to 32 alphanumeric characters. The SSID is case sensitive. The SSID in the wireless adapter card must match the SSID of the wireless router. In some configuration utilities (such as in Windows XP), the term “wireless network name” is used instead of SSID. • If WEP Authentication is Us...