Chapter 25: Building a Wireless Linux LAN Overview (Web server)
Chapter 25: Building a Wireless Linux LAN Overview by Christopher Negus Sometimes it s not convenient to run wires to all the computers on your network. Pulling Ethernet cables through existing walls can be a pain. Dragging wires into your garden so you can sit in a lounge chair and surf the Internet can ruin the ambiance. In many cases, a wireless LAN is an economical solution. A wireless Ethernet LAN can be configured in several different modes, depending on how you want to use the LAN. Here are some examples: Peer-to-peer To directly access other nodes on the wireless Ethernet LAN, you can set your wireless card to operate in Ad hoc mode. In this mode, communication doesn’t have to go through a wireless access point to communicate with peer computers. Instead, frames of data are broadcast to all nodes within range, but are consumed only by the computers for which they are intended. This arrangement is useful if you are sharing file and print services among a group of client computers. Figure 25-1 shows an example of a peer-to-peer wireless LAN. Figure 25-1: In Ad hoc mode, wireless LANs can communicate as peers. Access point By setting your wireless LAN card to Managed mode, your wireless interface can act as an access point for one or more wireless clients. Clients can be configured to communicate directly with the access point, instead of every client that is within range. This arrangement is useful for point-to-point connections between two buildings, where the access point is acting as a gateway to the Internet or campus Intranet. Figure 25-2 depicts a point-to-point wireless LAN operating in Managed mode.
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