Firewalls

231

14

Internal IP Security Threats:

Beyond The Firewall

14.1 Chapter objectives

■ Addressing the major threats to networks

■ Using a layered security strategy to address internal security

threats

■ Assessing risk to your organization

■ Examining inside attacks

■ Locating the saboteur

■ Finding the leaky mails

■ Dealing with new threats

At this point in the book, it is time to take a step back for a reality

check. Firewalls in themselves are not the end-all security solution.

A more complete approach is to integrate firewalls with other effec-

tive security tools. Let’s take a look.

Today the Internet has become a key tool for business communi-

cation and information sharing, and many organizations would

cease to function if e-mail and web access were denied for any

significant period. All Internet content you read, send, and receive

carries a risk. The number of potential security risks has increased at

the same time as that dependence on information technology has

grown, making the need for a comprehensive security program

even more important. Likewise, the job of those persons tasked with

network security, often system administrators, has never been

harder.