Wed. Jun 19th, 2024

Intrusion prevention security and intrusion detection security both are fundamental security pillars. Both systems monitor and survey the traffic and coming packets towards or via your network, and they keep on working until you, yourself, turn them off. Whether it is an intrusion detection system or intrusion prevention system, both alert and notify you of any type of bizarre behavior. Let’s start our debate on Prevention Vs Detection-based Security.

What Is an Intrusion Detection-Based Security?

Intrusion detection-based security involves an intrusion detection system (IDS) that detects and dredges up the intrusion, invasion, or trespassing of malicious packets in the traffic. IDS can help protect your assets without slowing down your system and traffic. Intrusion detection systems would detect anomalies and malicious packets at different levels such as host, network, application-based, or protocol-based. IDS working for a network works explicitly from a single pivot point from where it watches and observes all the traffic of all the systems and devices connected in that network. 

At the host, the intrusion detection system interrogates and catechesis all the independent devices of the network towards or from the host. A protocol-based intrusion detection system works by placing protection between a server and a device, and the space between them is monitored and examined by the IDS. Intrusion detection system for application-based protocols interrogates and examines among a bunch of servers. Intrusion detection systems actually ensure security by detecting violations and malefactions of security policies defined by the organization or system, malware attacks (known or unknown), and malicious packets. If IDS detects any intrusion or anomaly, it notifies security individuals by generating an alert.

What Is an Intrusion Prevention-Based Security?

Continuing the hot discussion on Prevention Vs Detection-based Security

Intrusion prevention-based security is categorized by intrusion prevention systems that detect and protect the system from malicious packets and malware attacks. The main concern of the Intrusion prevention system is protecting against external interlopers and intruders. IPS not only protects from external intrusions but also intrusions tried or attempted by the internal intruders (own employees). Mainly, four types of intrusion prevention systems work for security purposes: host-based, network, network behavior, and wireless. 

Intrusion prevention systems function as host-based systems by scanning and auditing the events between the specified hosts by choice. Network type Intrusion prevention system protects and forefends the traffic and data packets being transferred. It also works as defined by the network behavior. For instance, out-of-the-way or anomalous traffic is detected, and the network is protected from those malware attacks. Wireless IPS protects by observing, detecting, and forefending tasks happening in the wireless network and all devices connected to that server. 

An IPS spots an unusual and suspicious activity, alerts the system, and then takes action. Intrusion protection security involves real-time work after detecting, alerting, taking action, protecting, and cleaning up. You will receive an automatic report in a while. 

Prevention Vs Detection-based Security – 

What Are the Major Differences

Intrusion prevention security and intrusion detection security differs in the following manners:


Intrusion detection security trots out less protection with the comparison of intrusion prevention security because detection security only scans threats and anomalies while protection security takes action against that intrusion also.


An intrusion prevention system is an active security system, while an intrusion detection system is a passive security system. After getting an alert notification, you must take action based on detections. So, the type of response distinguishes IPS from IDS.


Intrusion prevention security requires regular updates of the database system being used. Meanwhile, an intrusion detection system requires humans or any other specified system to check up on the reports and results of the detection.

Types of Security System

Intrusion prevention security is a proper control system, while intrusion detection security is only a regulating and detecting tool.

Efficient Security

As an intrusion prevention security system works on a database with the defined policies and rulesets, which are the basic standards for IPS to protect the packets of the network’s traffic and accepts or rejects the entry of these packets. On the other hand, intrusion detection security systems only scans and does not take any action against detected threats. 

So, from this perspective, arguably, intrusion prevention security systems are more efficient than intrusion detection security systems.


Keeping the Prevention Vs Detection-based Security in mind, aim for both intrusion prevention and detection security are different as IPS aims to block threats before penetrating the internal assets and systems. At the same time, IDS lowers the chances of risk and impact of threat and amelioration of speed.

Perfect for Different Environment 

An intrusion prevention system is best for protecting against already known and cognized attacks, although intrusion detection systems are perfect for detecting and forfending customized and convoluted threats.

Location for Deployment

Intrusion prevention security mainly focuses on network circumferences; meanwhile, the location for deployment of intrusion detection security ranges from each and every device to the whole network.


So, what can we say on Prevention Vs Detection-based Security? Well, The IPS and IDS can enforce the security standards and policies, and IPS works on the defined standards and rulesets. 

Both intrusion prevention and detection security systems are essential to assuring security as these enforces policy and automation. Intrusion prevention security certifies that it will be responsible for protecting the system and network from known threats. In contrast, an intrusion detection system hereby alerts the network about unknown and unexpected malware attacks such as zero-day attacks or phishing attacks, etc.

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