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Chapter 9
Enhancing Security
Chapter 8 focused attention on security threats, examining viruses, directed
broadcasts, and other techniques that can cause harm to both computers and
networks. This chapter changes direction concerning the field of security and
examines proactive techniques one can implement to protect networks and
computers connected to networks.
The need to enhance security results from the structure of the TCP/IP
protocol suite.
One of the key advantages of the TCP/IP protocol suite is also a disad-
vantage. The advantage is its openness, with RFCs used to identify the manner
by which the protocol suite operates. Unfortunately, this ...