Networking Monitoring Tools

[BOBSAGET]

Im trying to find free tools to use for network monitoring. Specifically a tool that can monitor processor, memory, disk, and network activity while my client workstation connects to the server and accesses server resources.

Have any great tools i can try out?

 

[JustAGuy51]

Try nagios

Free but requires many days of dedication to learn. It can do pretty much everything. Instead of using web, better to buy books:
1. Pro Nagios 2.0 by James Turnbull
2. Nagios: System and Network Monitoring, 2nd Edit, Wolfgang Barth

Minimal Efforts to set up?
Try Big Brother but it is no longer free.