Intrusion Detection System (IDS) Vs Intrusion Prevention System (IPS)

An IDS is designed to only provide an alert about a potential incident, which enables a security operations center (SOC) analyst to investigate the event and determine whether it requires further action. An IPS, on the other hand, takes action itself to block the attempted intrusion or otherwise remediate the incident.

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An intrusion detection system (IDS) is a device or software application that monitors a network for malicious activity or policy violations. Any malicious activity or violation is typically reported or collected centrally using a security information and event management system.

An intrusion prevention system (IPS) is a network security tool (which can be a hardware device or software) that continuously monitors a network for malicious activity and takes action to prevent it, including reporting, blocking, or dropping it, when it does occur.

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What is the difference between IDS IPS and a firewall?

The major distinction is that a firewall blocks and filters network traffic, but an IDS/IPS detects and alerts an administrator or prevents the attack, depending on the setup. A firewall permits traffic depending on a set of rules that have been set up. It is based on the source, destination, and port addresses.

What is IDS IPS used for?

An intrusion detection system (IDS) is defined as a solution that monitors network events and analyzes them to detect security incidents and imminent threats. 

An intrusion prevention system (IPS) is defined as a solution that performs intrusion detection and then goes one step ahead and prevents any detected threats.