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High Quality Content by WIKIPEDIA articles! A network monitoring interface card or NMIC is similar to a network card (NIC). However, unlike a standard network card, an NMIC is designed to passively (and silently) listen on a network. At a functional level, an NMIC may differ from a NIC, in that the NMIC may not have a MAC Address, may lack the ability to transmit and may not announce its presence on a network. Advanced Network Monitoring Interface Cards have features that include an ability to offload CPU intensive processing from a system's CPU, accurate time measurement, traffic filtering,…mehr

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High Quality Content by WIKIPEDIA articles! A network monitoring interface card or NMIC is similar to a network card (NIC). However, unlike a standard network card, an NMIC is designed to passively (and silently) listen on a network. At a functional level, an NMIC may differ from a NIC, in that the NMIC may not have a MAC Address, may lack the ability to transmit and may not announce its presence on a network. Advanced Network Monitoring Interface Cards have features that include an ability to offload CPU intensive processing from a system's CPU, accurate time measurement, traffic filtering, and an ability to perform other application specific processing. NMICs are typically used in intrusion detection and prevention (IDS/IPS), lawful interception, flow analysis, network monitoring, and protocol analyzer systems.