Firewalls alone are not enough to ward off today's more highly developed range of attacks. In fact, no single security method can truly detect or stop all attacks -- that is why many companies deploy multiple firewalls as additional security measures. Along those same lines, an Intrusion Detection System (IDS) is powerful tool that IT managers should consider in order to protect their information resources. In fact, IDS should be considered a part of your overall security strategy because it can provide proactive response protection (detect the attack and stop the attack). Let's take a look at IDS and see where it fits in to your network security plans.

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