The IAASARS LAN network is part of the extended NOA network. The IAASARS network is connected to the internet via the “Greek Research and Technology Network” at a speed of 1 Gbps. The IAASARS LAN operates at 100/1000 Mbps (wireless, fiber optic and UTP wiring) and uses four CISCO routers and six CISCO switches. It serves about 200 computing and peripheral units. Helmos Observatory is connected to the wide area network through an optical fibre and a wireless (antenna) connection which serves as a backup. The computer center of the Institute includes a linux cluster with 32 processors and 64GB total memory. It is used extensively for research purposes by NOA staff but also from outside.