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Reference Manual for the NETGEAR 54 Mbps Wireless PCI Adapter WG311 v3
B-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.
Authentication and WEP
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 two types of authentication methods, Open System and Shared Key. With
Open System authentication, a wireless PC can join any network and receive any messages that are
not encrypted. With Shared Key authentication, only those PCs that possess the correct
authentication key can join the network. By default, IEEE 802.11 wireless devices operate in an
Open System network.
Wired Equivalent Privacy (WEP) data encryption is used when the wireless devices are configured
to operate in Shared Key authentication mode. There are two shared key methods implemented in
most commercially available products, 64-bit and 128-bit WEP data encryption.
- Reference Manual for the 1
- NETGEAR 54 Mbps 1
- Wireless PCI Adapter 1
- WG311 v3 1
- March 2005 3
- Regulations 4
- Contents 5
- Contents vii 7
- Glossary 7
- Chapter 1 9
- Introduction 9
- What’s in the Box? 10
- Introduction 1-3 11
- 1-4 Introduction 12
- Introduction 1-5 13
- 1-6 Introduction 14
- Chapter 2 15
- Basic Setup 15
- Two Basic Operating Modes 16
- Basic Setup 2-3 17
- 2-4 Basic Setup 18
- Basic Setup 2-5 19
- 2-6 Basic Setup 20
- Basic Setup 2-7 21
- 2-8 Basic Setup 22
- Basic Setup 2-9 23
- 2-10 Basic Setup 24
- Basic Setup 2-11 25
- Basic Troubleshooting Tips 26
- About Page 27
- 2-14 Basic Setup 28
- Chapter 3 29
- Configuration 29
- Networks Tab Page 30
- Configuration 3-3 31
- 3-4 Configuration 32
- Configuration 3-5 33
- 3-6 Configuration 34
- Configuration 3-7 35
- Settings 36
- Configuration 3-9 37
- 3-10 Configuration 38
- Statistics Tab Page 39
- Advanced Settings Page 40
- Appendix A 41
- Technical Specifications 41
- A-2 Technical Specifications 42
- Appendix B 43
- Wireless Networking Basics 43
- Authentication and WEP 44
- 802.11 Authentication 45
- Open System Authentication 45
- Shared Key Authentication 46
- Overview of WEP Parameters 47
- Key Size 48
- WEP Configuration Options 48
- Wireless Channels 49
- Appendix C 51
- Windows 98SE and Me 53
- Verifying TCP/IP Properties 55
- Glossary 63
- 2 Glossary 64
- 4 Glossary 66
- Wireless Network Name (SSID) 67
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