AAFID

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AAFID stands for Autonomous Agents for Intrusion Detection, a distributed intrusion detection system. In this architecture, nodes of the ids are arranged in a hierarchical structure in a tree. The first generation of Distributed Intrusion Detection Systems had hierarchical architecture.

The general types of distributed intrusion detection systems are as follows:

• hierarchical
• network architecture
• hybrid architecture
• mobile agent architecture

Agents in AAFID were not mobile. AAFID was one of the earliest hierarchical distributed intrusion detection systems.