That's exactly what I was asking myself. Are we talking about monitoring or adminstration?
I've recently implemented an awesome network monitoring system at my company's network, which allows me to track all services provided on every server, externally and internally.
Its called "Nagios" and is a slight pain the butt to setup, but does wonders and a very good job monitoring the network. I downloaded a few commercial products, and none came close to what Nagios offered. I'm considering even doing a review on the product at some point.
I'll see if I can post a few screen shots tomorrow from the office.
You can grab it at
www.nagios.org