CHAPTER 18
Networking
IN THIS CHAPTER
Laying  the Foundation: The localhost   Interface
Checking    Connections with    ping,   traceroute, and mtr
Networking  with    TCP/IP
IPv6    Basics
Network Organization
Hardware    Devices for Networking
Using   Network Configuration   Tools
Dynamic Host    Configuration   Protocol
Wireless    Networking
Beyond  the Network and onto    the Internet
Common  Configuration   Information
ReferencesOne of the benefits of open source technology in general and Linux is
particular  is  that    it  can be  used    effortlessly    across  several networking
environments    and the Internet.   With    strong  support for the standard    Internet
protocol    TCP/IP, Linux   can talk    to  all the UNIX    flavors,    including   macOS,
Windows (with   the help    of  Samba), NetWare (IPX),  and even    older   protocols
such    as  DECnet  and Banyan  VINES.  Many    organizations   use Linux   as  an
Internet    gateway,    allowing    many    different   clients to  access  the Internet
through Linux,  as  well    as  communicate via email   and instant messaging.  Most
important   is  its built-in    support for IPv6,   which   has begun   to  see a   significant
uptake  in  the commercial/enterprise   world.  It’s    safe    to  say that    whatever
networking  protocol    you come    across, Linux   will    be  able    to  work    with    it  in
