Glossary   >   What is Intrusion Detection System (IDS)

What is Intrusion Detection System (IDS)

IDS is an automated security technology designed to monitor and analyze network or system activities for signs of malicious activities or security policy violations.

IDSs employ a variety of methods, such as anomaly, behavior, and signature-based detection, to find suspicious activity.

When an intrusion detection system finds unusual activity, it can either issue a warning or take additional action, such as blocking traffic or deactivating user accounts. To offer a complete defense against online threats, an IDS can be set up to cooperate with firewalls and antivirus programs, among other network security technologies.

Network-based IDSs (NIDSs) and host-based IDSs (HIDSs) are the two primary categories of IDSs. HIDSs keep an eye out for indications of unauthorized access or other security dangers on specific systems or hosts, whereas, NIDSs scan network traffic for indications of malicious behavior. Both intrusion detection systems are crucial for safeguarding against an extensive array of cyber hazards and are frequently employed in business settings to augment network security.