IDS Intrusion Detection System

Intrusion Detection System : What Is It?

IDS are one of the most important systems that monitor and even detect apprehensive activities and spawn alerts when they are perceived. Based upon this vigilance a SOC responder will probe the issue and will also take obligatory and suitable actions to remediate the threat. There are different intrusions and Types of Intrusion Detection System and as the majority of the cybersecurity solutions IDS can be both network-based and host-based.

IDS Intrusion Detection System


Network-based IDS

IDS solution which is network-based is built in a way that it can entirely monitor as well as protect the network. It can look into all the traffic that is flowing through your network and also makes fortitude based upon packet contents and mate data.  There is a wider perspective that lends more facility and framework to identify prevalent threats but lacks visibility into endpoints internals which they protect.

Host-based IDS :  Host-based systems are deployed on a significant endpoint and devised to shield against external and internal threats. Such an intrusion detection system might have the potential to monitor the traffic of the network to and from the machine, inspects the logs of the system, and also observes processes, which are running. The visibility of the Host Based Intrusion Detection System is limited to the host machine which lowers the decision-making for content; however, has great visibility into the internals of the host computer.

There are different visibility levels, deploying NIDS or HIDS in isolation will lend incomplete security to the system of the organization. Using a unified threat management solution will help you provide more comprehensive security as it will integrate multiple technologies in a single system.

How to Detect the IDS Deployment?

IDS Intrusion Detection System
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Beyond the deployment location of IDS, these solutions also differ in the method of identifying potential intrusions and then Intrusion Prevention can happen. These are:

  • Anomaly Detection : IDS solutions that are anomaly-based, build a model of the ‘normal’ behavior of the secured system. The comparison of all future behavior to this model takes place to discover any anomalies or potential threats and produce alerts.

  • Signature Detection : IDS solutions that have signature-based approaches, utilize fingerprints of recognized threats to detect them. When any malware or malicious content is being detected, then a signature is produced and added to the list utilized by the IDS solution. This way, testing of the incoming content is being done. Under this approach, a high threat detection rate is being achieved with no false positives as all alerts are produced according to the detection of known malicious content.


  • Hybrid Detection : The ids intrusion Detection System with the hybrid detection strategy uses both anomaly-based and signature-based detection. Using this strategy will identify more potential attacks with a reduced error rate than utilizing either system in separation.

Hence, choosing an IDS solution is a very complicated task and it must be selected well because it is a valuable element of any organization’s cybersecurity deployment. With an IDS system, one can add an extra line of defense, which makes it hard for an attacker to get access to the undetected network of the organization.

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