There are many monitoring tools for the network, server and infrastructure. You can easily monitor. Maintain and troubleshoot from any of the location. Suppose if you are anywhere in the country with the help of central location then easily can monitor like how many computers are up and how many computers are not running, in all the computers running which applications, also can monitor about the bandwidth of the computer.
1. Solarwinds Network Performance Monitor
If you want to download, install and configure this tool then can use following link for the same.
http://www.solarwinds.com/network-performance-monitor/registration
You can also monitor like how many internet protocols running in the network, how many using ip from the server also how many internet protocols address taken from the manual method.