Hacks #31-53
As we rely more and more on massively interconnected networks, the
stability and security of these networks is more vital than
ever. The world of business has
adopted information technology to help streamline their processes,
increase productivity, and cut costs.
As such, a company's IT infrastructure is
a core asset to many businesses.
Because of this, many businesses would cease to function
if disaster (whether natural or digital) were to disrupt their
network operations in a significant way.
At the same time, the widespread adoption of the Internet
as a global communications medium has also brought computer networks
out of the business and academic world and into our personal lives,
where it is used not only for entertainment, but also as a means to
keep in touch with friends, family, and loved ones.Although this book as a whole is meant to address network security,
the information it contains extends into many other areas. After all, a network is simply a means to
connect machines and services together so that they can
communicate. This chapter, however,
deals primarily with the security and integrity of the network
itself. In this chapter,
you'll learn how to detect and prevent certain types
of spoofing attacks that can be used to compromise the core integrity
of a TCP/IP Ethernet network at its lowest level. This chapter also includes a great deal of
information about firewalls, discussing everything from basic
port-based firewalling to MAC-address filtering, and even shows you
how to create a gateway that will authenticate machines based on
login credentials.Although it is not always a direct security threat, network
reconnaissance is often a precursor to an attack. In this chapter, you'll
learn how to fool those who are trying to gather information about
the hosts on your network, as well as ways to detect eavesdroppers
who are monitoring your network for juicy bits of
information. |
لطفا منتظر باشید ...
