This paper describes our experiences in the design and implementation of a network for security training exercises, and one such exercise. The network described herein is flexible, and could be used for a wide variety of training exercises. Organizations of all sizes can use this type of exercise to train new personnel or keep existing staff at their best. In addition to the training benefits, these exercises can also be highly entertaining. The designs described here are intended to assist others in the construction of similar networks, and additional training scenarios.