"Some recent e-mail questions about Linux networking have
prompted me to a compile this brief overview with pointers to a
series of network resources for Linux. You'll find all kinds of
information at these links, from the basics of TCP/IP networking to
the configuration of cross-platform network services."
"The best place for a Linux or Unix user to start networking is
with an introduction to the TCP/IP protocol used by this family of
operating systems for decades now. Another set of basic links for
multi-platform TCP/IP information can be found at About.com's own
networking site and the Basic Networking page subject there."
"Once you've got the TCP/IP basics covered, the most important
source of Linux-specific networking documentation on the Web is at
the Linux Documentation Project and is known as the The Linux
Network Administrator's Guide."