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Do you need an IDS or IPS, or both?
This article is part of the Information Security magazine issue of May 2009
While threat management continues to be a top priority, it is more important than ever for cash-strapped security professionals to fully understand the functionality of intrusion defense tools in order to make good purchasing decisions. Intrusion defense systems (IDS) and intrusion prevention systems (IPS) are a particularly confusing area because the products are so similar, the vendors are all the same, and even the acronyms are hard to tell apart. We'll explain the capabilities of each and how to decide whether you need one or both technologies. Differentiating IDS and IPS An IPS is not the same as an IDS. However, the technology that you use to detect security problems in an IDS is very similar to the technology that you use to prevent security problems in an IPS. It's important to start out with the understanding that IDS and IPS are very, very different tools. Even though they have a common base, they fit into the network in different places, have different functions, and solve different problems. An IPS is best compared ...
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Features in this issue
Identity management technology is adapting to meet enterprise needs. Learn what products can improve security and ease compliance.
The Cybersecurity Act of 2009, also known as S.773, would give the president unprecedented authority over federal and private networks. Experts debate whether it's a power grab, or a signal of the seriousness of threats to critical infrastructure.
Cut through the hype and learn the differences and benefits of intrusion detection and prevention systems.
Manual compliance processes are error-prone and drain corporate IT resources. Automated tools make a difference if you apply them to a well-organized compliance program.
Columns in this issue
A service-oriented approach is the best way to demonstrate security's value and win support for security initiatives.
Security researchers have declared they want vendors to compensate them for their independent search for vulnerabilities.
Security experts Bruce Schneier and Marcus Ranum debate whether users should have an expectation of online privacy.