Crossroads: Introduction to Linux Networking and Security

“Linux is a member of the UNIX family but is different than most
UNIX implementations because it provides a great UNIX
server/workstation environment at a low cost, can be run on a wide
variety of platforms, and contains no proprietary code. In this
article, we will give a brief introduction to the IP networking
services, how to configure them, and how to set up a relatively
secure Linux workstation…”

“Linux supports a full and high quality implementation of the
TCP/IP networking protocols. With a network interface card or a
modem and PPP, one can connect a machine to a local area network or
the Internet and have access to many additional services and
network utilities. Linux provides two methods of establishing
host-network services…”

“People often ask, “How secure is my machine?” The answer is
that any publicly accessible machine is necessarily insecure and
vulnerable to security problems. Hence, we should take proper
steps to minimize the vulnerability. There are three different
aspects of security: physical, system, and network.”

Complete
Story