.. _threat: Detecting Anomalies ------------------- .. note:: This feature required Professional or Enterprise Edition An **Anomaly** is a signature of abnormal activity that may indicate a security breach, or an outside entity searching for network or device vulnerabilities. A **Vulnerability** is an opening that can be exploited to cause damage to a device, or to network security. Genian NAC inspects network traffic to identify abnormalities in the network and marks endpoint devices that have Anomalies. You can configure custom **Anomaly Definitions** or use the seven pre-defined definitions provided by default to detect endpoint devices that are exposed to major Anomalies such as **Ad hoc Networks, ARP Bombing, ARP Spoofing, MAC+IP Clones, Port Scanning** and more. .. toctree:: :maxdepth: 1 threats/understanding-threat threats/preset threats/threat-definition threats/detecting-threats threats/blocking-threats threats/arp-bomb threats/macip-clone threats/multi-homed threats/port-scanning threats/invalid-gateway threats/spoofed-arp threats/unauthorized-service