EMC Study Guide

With the proliferation of viruses and malicious attacks on computer systems today, it is not just wise, but mandatory, to protect your systems. Many network administrators remember Nimda and Blaster all too well. Even some that thought they were fairly well protected got hit. Sometimes it seems that just when one type of attack can be defended, another begins. To make matters worse, in an IP telephony environment you need to protect the system not only from computer-related attacks, but also from the types of attacks common to voice systems, such as toll fraud. You might as well face it now; there is no silver bullet that completely and forever protects you. But there are steps you can take to make sure you are not an easy mark. This section examines some of the current security concerns of which you should be aware. When possible, solutions are offered, but remember, this is an on-going battle. The goal of this section is to make you aware of a few of the security issues and encourage you to be vigilant in protecting your system.

Both CallManager and Unity use Windows as their operating system, so they are both vulnerable to the security issues that exist for Windows. Because Microsoft is undeniably the most commonly installed OS, it is a very large target. For various reasons, some people hold grudges against Microsoft and hence find it fun to attack systems running on a Microsoft OS. Whether they are valid grudges or not is not important when it comes to protecting your systems. What is important is that the attacks do occur and you need to protect your system.

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