Netgear DGB111G Operations Instructions download pdf (Page 206)

Reference Manual for the Model Wireless ADSL Firewall Router DG834G

D-2 Wireless Networking Basics

Ad Hoc Mode (Peer-to-Peer Workgroup)

In an ad hoc network, computers are brought together as needed; thus, there is no structure or fixed

points to the network - each node can generally communicate with any other node. There is no

Access Point involved in this configuration. This mode enables you to quickly set up a small

wireless workgroup and allows workgroup members to exchange data or share printers as

supported by Microsoft networking in the various Windows operating systems. Some vendors also

refer to ad hoc networking as peer-to-peer group networking.

In this configuration, network packets are directly sent and received by the intended transmitting

and receiving stations. As long as the stations are within range of one another, this is the easiest

and least expensive way to set up a wireless network.

Network Name: Extended Service Set Identification (ESSID)

The Extended Service Set Identification (ESSID) is one of two types of Service Set Identification

(SSID). In an ad hoc wireless network with no access points, the Basic Service Set Identification

(BSSID) is used. In an infrastructure wireless network that includes an access point, the ESSID is

used, but may still be referred to as SSID.

An SSID is a thirty-two character (maximum) alphanumeric key identifying the name of the

wireless local area network. Some vendors refer to the SSID as network name. For the wireless

devices in a network to communicate with each other, all devices must be configured with the

same SSID.

The ESSID is usually broadcast in the air from an access point. The wireless station sometimes can

be configured with the ESSID ANY. This means the wireless station will try to associate with

whichever access point has the stronger radio frequency (RF) signal, providing that both the access

point and wireless station use Open System authentication.

Authentication and WEP Data Encryption

The absence of a physical connection between nodes makes the wireless links vulnerable to

eavesdropping and information theft. To provide a certain level of security, the IEEE 802.11

standard has defined these two types of authentication methods:

• Open System. With Open System authentication, a wireless computer can join any network

and receive any messages that are not encrypted.

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Netgear DGB111G Operations Instructions Page 206