![]() Intrusion detection systems can be classified based on their detection method and the range in which they operate. The specific way the IDS detects suspicious activity depends on what type of detection method it uses and the scope of its system network. When an IDS identifies a threat, it will usually send an alert to a security operations center (SOC) or security specialist. IDSs identify security threats by assessing network traffic against known threats, security policy violations, and open port scanning. Intrusion detection systems identify suspicious network activity by analyzing and monitoring traffic indicators of compromise. How Does an Intrusion Detection System Work? Once the IDS detects any cyber threats, the system will either report this information to an administrator or a security information and event management (SIEM) system collects it centrally.Ĭlick here to skip ahead to our list of the best IDS tools. IDSs place sensors on network devices like firewalls, servers, and routers, or at a host level. ![]() An intrusion detection system (IDS) is a software application or hardware device that detects vulnerability exploits, malicious activity, or policy violations.
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