In the November 2012 issue of SC Magazine (Pg 26-28) titled “IPS Grows Up”, an article by Fahmida Rashid discusses some of the changing landscape for intrusion protection systems with a variety of experts. There are a variety of interesting topics and statistics regarding IPS such as the following:
While IPS won’t be able to block attacks exploiting zero-day vulnerabilities or thwart skilled adversaries using sophisticated tactics, it should “prevent 99 percent of push-button or automated attacks, Al-Abdulla says.”
While many can agree with that statement, what probably would not receive a great deal of agreement was the following statement within the article:
Holden predicts IDS will “fall by the wayside” in the next three to five years.
While it is understood that IDS is not detective rather than reactive, but one of the things that many businesses and agencies have a hard time tuning IPS in a way that there will not be any issues with mission or business critical traffic. The thought that IDS will no longer be necessary seems very short-sighted and limited. Granted most IPS devices are also IDS, but if defense in-depth is still a valid concept and that risk is a business decision, then IDS will remain in use for the foreseeable future.