What’s the Difference Between Intrusion Detection and Intrusion Prevention Systems?

Intrusion Detection System

How does an intrusion detection system differ from an intrusion prevention system? Read on to find out.

In the world of cybersecurity, intrusion detection and intrusion prevention are two different kinds of tooling and practices that are applicable during different stages of the cybersecurity chain intended to establish network security. Both technologies are aimed to understand activities that could harm an otherwise healthy computer network. In some cases, these systems may work together alongside a suite of other technologies and protocols to create a high standard of security. Below, we compare and contrast intrusion detection and intrusion prevention systems to better equip you to protect your network from harm.

Intrusion Detection Systems

This refers to any technology that passively monitors a network and identifies anomalous activities or traffic patterns that may cause alarm for a network administrator. This may include any inbound or outbound traffic that poses a threat to a network and an IDS system can be configured to alert the proper personnel (or other technologies) to then further address the threat. In contrast to something like a firewall, an IDS system does not block data packets once suspicious activity is detected and instead works as an informational tool that helps gather information on potential security threats.

Intrusion Prevention Systems

On the other hand, intrusion prevention systems are technology solutions that actively respond to potential threats either by blocking the network traffic itself or blocking unauthorized actions within various levels of the system. While an IDS isn’t comparable to a firewall, an IPS can be thought of as a more sophisticated firewall with built-in IDS capabilities as well, intended to allow the system to prevent attacks from happening whatsoever. An IPS is a bit more robust when compared to a firewall however, as it allows the system to analyze an entire data packet and can correlate the information with any known events of high network security risks.


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FiberPlus has been providing data communication solutions for over 25 years in the Mid Atlantic Region for a number of different markets. What began as a cable installation company for Local Area Networks has grown into a leading provider of innovative technology solutions improving the way our customers communicate and keeping them secure. Our solutions now include:

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This entry was posted on Friday, January 18th, 2019 at 10:37 am . You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.