Among the earliest work at Coleman Technologies: WAN and LAN design for water treatment facilities, and the security and monitoring layer built around them.
Cisco PIX firewalls fronting the water treatment network with WebSENSE content monitoring behind them. Remote access on Cisco 3000 concentrators — formerly Altiga — and 3620 routers, with certificates issued from both Microsoft and Entrust certificate authorities.
And a web-based network monitoring tool written over MRTG, so the state of the Cisco estate was visible on a page rather than by polling a device. Building the visibility layer yourself, before that was something you bought, is a habit that later became data centre infrastructure management and instrumented containment.