Network-based Intrusion Detection System (NIDS)

The Network-based Intrusion Detection System is responsible for monitoring data traffic in a network. To prevent a NIDS from being overused, it is useful to divide it into smaller segments. Once the system is registered on the network, the traffic passing through the responsible segment is guarded and recorded. When the NIDS has examined the data, the signature of the data can be used to verify if the data is sound or if it is an attack. The NIDS accesses a specific list in which damaged data traffic is described and what should happen to this data. NIDS must be placed in the network in a well-dosed manner, otherwise the network will be overloaded, and network performance will drop significantly.