For Dummies CCENT Certification All-In-One 978-0-470-64748-6 User Manual
Product codes
978-0-470-64748-6
Chapter 1: Network Security
Terminology
Terminology
In This Chapter
✓
Introduction to security terminology
✓
Identifying types of attacks
✓
Looking at security devices
✓
Mitigating security threats
O
ne of the most important skills to have if you are going to support net-
worked systems or systems connected to the Internet is the ability of
worked systems or systems connected to the Internet is the ability of
securing systems and networks. In order to be successful as a network pro-
fessional today, you need to have a solid understanding of network security
and ways to protect the network.
fessional today, you need to have a solid understanding of network security
and ways to protect the network.
I remember when a close friend of mine had his Web site totally replaced
by a hacker. My friend’s Web site files were replaced with inappropriate
content, and he wondered how on Earth someone had hacked his server. It
seems amazing now, but back then (circa 1994) a lot of companies did not
use firewalls because they were not aware of the risks involved in having a
computer connected directly to the Internet. Back then, people thought, “I
have a password on the administrator account, so I am secure.”
by a hacker. My friend’s Web site files were replaced with inappropriate
content, and he wondered how on Earth someone had hacked his server. It
seems amazing now, but back then (circa 1994) a lot of companies did not
use firewalls because they were not aware of the risks involved in having a
computer connected directly to the Internet. Back then, people thought, “I
have a password on the administrator account, so I am secure.”
In this chapter, you find out about the basic concepts and terminology
related to information system security and network security. Be sure to read
this chapter carefully, and make sure you understand the topics, as you will
be tested on basic security concepts with the CCENT certification exam.
Have fun with this topic area — security is a very exciting field!
related to information system security and network security. Be sure to read
this chapter carefully, and make sure you understand the topics, as you will
be tested on basic security concepts with the CCENT certification exam.
Have fun with this topic area — security is a very exciting field!
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