Network Sniffers - Packet Capturing

A Smart program which will examine every host on your network to see if any stations are in promiscuous mode, which basically means that they are running a packet sniffer ! 15 Day trial version. Only draw back is the time it takes to scan each host.

Iris is a study in simplicity, an awesome packet sniffer. A next-generation network protocol analyzer or sniffer, Iris allows the network administrator to capture and retrace the steps of any network user with never before seen ease. By monitoring both incoming and outgoing network traffic, Iris functions as a complete systems management watchdog.

Packet Boy is a simple packet sniffer. Its interface is somewhat similair to Network Monitor (Windows standard packet sniffer) and its feature are not all that great, but it will certainly do the job.