homestead -- 3D real-time network visualiser
http://homestead.sourceforge.net/
Homestead is a 3D real-time network visualizer, displaying hosts and packet traffic. Features include support for multiple sensors, analysis of packets to gather hostnames and services, configurable layout of subnetworks, recording/replaying of packet traffic, and the ability to filter packets by host, protocol or port. hsen (Homestead Sensor) is a packet capture daemon which reads and sends packet header information to Homestead, locally or remotely. hsen also equates hostname to IP by reading DNS packets (UDP type A class IN standard query response). The relationship between hsen to Homestead can be one-to-one, one-to-many, many-to-one or many-to-many (many Homesteads would be on multiple computers on the same subnet, receiving packet header information from hsen via broadcast).