Types of Intrusion Detection System in Cybersecurity


As the frequency of cyberattacks and intrusions increases, the imperative to monitor and secure your company’s network has never been more critical. It is essential to prioritize the protection of your network in light of these escalating threats. 

To safeguard your business from these potential threats, it is essential to implement a robust cybersecurity framework. An integral component of this framework is an Intrusion Detection System.

An Intrusion Detection System (IDS) serves as a vigilant scout or security guard within your network, diligently monitoring any suspicious activities and promptly alerting you as necessary. In the current market, a variety of IDS solutions exist, each offering distinct capabilities and features to address the evolving landscape of network security. Interact with the professionals at IT Support Denver to choose the right intrusion detection system for your business.

Here are the different intrusion detection system types in cybersecurity.

What is an Intrusion Detection System?

An Intrusion Detection System (IDS) is a security technology that monitors network and system activities to identify and respond to unauthorized access or malicious behavior. It collects and analyzes data from various sources, such as network traffic, logs, and system events, to detect potential security incidents.

When an IDS detects an intrusion or suspicious activity, it generates alerts or takes automated actions to mitigate the threat. IDS can be categorized into two types: network-based IDS (NIDS), which analyzes network traffic for signs of intrusion, and host-based IDS (HIDS), which monitors activities on individual systems or hosts. Organizations can enhance their security posture by deploying an IDS and proactively protecting their networks and systems against cyber threats.

6 Different Types of Intrusion Detection Systems

  • Network Node Intrusion Detection System

A network node intrusion detection system (NIDS) is an intrusion detection system that focuses on monitoring and analyzing the traffic flowing through a specific network node. This can include monitoring traffic at a network’s entry and exit points, such as routers or firewalls. NIDS examines network packets for any signs of malicious activity or unauthorized access attempts.

It uses predefined rules and signatures to identify known attack patterns and anomalies in network traffic. When suspicious activity is detected, the NIDS can generate alerts or take action to block or mitigate the threat. Implementing different intrusion detection types can help organizations enhance network security and detect potential threats in real-time.

  • Host-Based Intrusion Detection Systems

Host-Based Intrusion Detection Systems (HIDS) are intrusion detection systems installed on individual hosts or endpoints within a network. These systems monitor the activity and behavior of the host, looking for any signs of unauthorized access or suspicious activity. HIDS can detect many threats, including malware infections, unauthorized changes to system files, and abnormal network connections.

They work by comparing the host’s current state to a known baseline or set of rules, alerting administrators or security teams when deviations or anomalies are detected. HIDS are particularly effective at detecting attacks that originate from within the network and insider threats. If you want to leverage HIDS to avoid potential vulnerabilities, visit Cybersecurity Denver experts.

  • Hybrid Intrusion Detection Systems

Hybrid intrusion detection systems (IDS) are a type of IDS that combine the capabilities of both network-based IDS (NIDS) and host-based IDS (HIDS). This hybrid approach allows for comprehensive monitoring and detection of potential security breaches. NIDS monitors network traffic and analyzes it for suspicious activity, such as unauthorized access attempts or unusual data transfers.

HIDS, on the other hand, focuses on individual hosts or endpoints and monitors their activity for signs of intrusion or compromise. Combining these two approaches, hybrid IDS can provide a more robust and holistic view of an organization’s security posture. They can detect threats at both the network and host levels, providing enhanced protection against sophisticated attacks and insider threats. Additionally, hybrid IDS can provide valuable insight into the root cause and impact analysis of detected incidents, which can help organizations respond effectively to security breaches.

  • Cloud-Based Intrusion Detection Systems

Cloud-based intrusion detection systems (IDS) are a type of IDS that operate in the cloud rather than on-premises. These systems use advanced algorithms and machine learning techniques to analyze network traffic and detect potential security threats. By leveraging the power of the cloud, these IDS can handle large volumes of data and provide real-time threat monitoring and response.

Cloud-based IDS offers several advantages, including scalability, as they can easily accommodate growing networks and handle increased traffic loads. In addition, they provide enhanced visibility into network activity across multiple locations and devices, making them ideal for organizations with distributed infrastructures. With their ability to quickly identify and respond to security incidents, cloud-based IDS plays a crucial role in protecting sensitive data and ensuring the integrity of IT systems.

  • Protocol-Based Intrusion Detection System

Protocol-Based Intrusion Detection Systems (IDS) focus on monitoring network traffic at the protocol level. These systems analyze the headers and payloads of network packets to detect any abnormal or suspicious activity. Protocol-based IDS can effectively detect known attacks that exploit vulnerabilities in specific protocols, such as DNS or HTTP.

They can also detect unauthorized protocol usage or non-compliant behavior. By closely monitoring network protocols, these IDS can help organizations promptly identify and respond to potential security threats. However, protocol-based IDS may have limitations when detecting more sophisticated or unknown attack techniques. Organizations should consider implementing multiple layers of defense, including other types of IDS systems, to ensure comprehensive network security.

  • Wireless Intrusion Detection Systems

Wireless Intrusion Detection Systems (WIDS) are intrusion detection systems that specifically focus on identifying and preventing unauthorized access to wireless networks. These systems monitor the wireless network for suspicious activities or potential security breaches, such as unauthorized devices attempting to connect or abnormal traffic patterns.

WIDS can also detect and alert administrators to rogue access points, which are unauthorized wireless access points that pose a significant security risk. By implementing a wireless intrusion detection system, organizations can enhance their network security and protect against potential cyber threats targeting their wireless infrastructure.

In Conclusion

As the cyber threat landscape continues to evolve, the importance of robust Intrusion Detection Systems cannot be overstated. Understanding the different types of IDS and their unique capabilities is crucial for organizations seeking to protect their cybersecurity defenses. From network-based and host-based solutions to cloud-based approaches, every kind of IDS contributes to a comprehensive and dynamic security posture. As technology advances, it is imperative to stay informed about emerging threats and the evolving landscape of cybersecurity, ensuring that our defense mechanisms remain resilient against the ever-changing tactics of malicious actors.