A whole host of options can be used in dhcpd.conf: Entire books are
dedicated to DHCP. The most comprehensive book is The DHCP Handbook,
by Ralph Droms and Ted Lemon. You can define NIS domains, configure
NetBIOS, set subnet masks, and define time servers or many other types of
servers (to name a few of the DHCP options you can use). The preceding
example gets your DHCP server and client up and running.
The DHCP server distribution contains an example of the dhcpd.conf file
that you can use as a template for your network. The file shows a basic
configuration that can get you started with explanations for the options used.
Wireless Networking
Linux has had support for wireless networking since the first standards were
developed in the early 1990s. With computers getting smaller and smaller, the
uses for wireless networking have increased; meanwhile, the transmission
speeds are increasing all the time. There are several ways to create a wireless
network. The following sections introduce you to several Linux commands
you can use to initialize, configure, and manage wireless networking on your
Ubuntu system.
Support for Wireless Networking in Ubuntu
The Linux kernel that ships with Ubuntu provides extensive support for
wireless networking. Related wireless tools for configuring, managing, or
displaying information about a wireless connection include the following:
iwconfig—Sets the network name, encryption, transmission rate, and
other features of a wireless network interface
iwlist—Displays information about a wireless interface, such as rate,
power level, or frequency used
iwpriv—Sets optional features of a wireless network interface, such as
roaming
iwspy—Shows wireless statistics of a number of nodesSupport varies for wireless devices, but most modern (that is, post-2005)
wireless devices should work with Ubuntu. In general, Linux wireless device
software (usually in the form of a kernel module) supports the creation of an
Ethernet device that can be managed using traditional interface tools such as
ifconfig—with wireless features of the device managed by the various
wireless software tools.