Intrusion blocking is software designed to identify and block any unauthorized access to a computer network or system. This is achieved through an Intrusion Detection System (IDS), which can be either a Host IDS (HIDS) or a Network IDS (NIDS).
HIDS monitors activity within a single host to identify and prevent any illegal activity, whereas NIDS is built to handle multiple hosts on a network. Most IDS applications use well-known signatures of attempted attacks to raise an alert. Others look for deviations from the norm to detect any possible breach.
Although it’s challenging to detect intrusions, over-analyzing a situation could lead to false alarms and unnecessary overhead. An effective attack may go unnoticed if there is insufficient investigation.
Extrusion detection serves as a polar opposite of intrusion detection in which software analyses outgoing data to prevent any virus or malware from leaving the network or system.
FAQ
What is an Intrusion Detection System (IDS)?
An Intrusion Detection System (IDS) is software designed to identify and prevent any unauthorized access to a computer network or system.
What is the difference between Host IDS and Network IDS?
Host IDS (HIDS) monitors activity within a single host to identify and prevent any illegal activity, whereas Network IDS (NIDS) is built to handle multiple hosts on a network.
How do IDS applications detect intrusions?
Most IDS applications use well-known signatures of attempted attacks to raise an alert. Others look for deviations from the norm to detect any possible breach.
Final Thoughts
Intrusion blocking plays a pivotal role in safeguarding computer networks or systems from unauthorized access. Though there are challenges in detecting intrusions, IDS serves as a reliable source for identifying and preventing any illegal activity. Companies that depend on computer systems must prioritize intrusion blocking to ensure business continuity and avoid data breaches.
