Look at the MRTG package. It's mainly for looking at router throughputs,
but it will work admirable for things like diskspace, cpuload etc. It's in
http://www.debian.org/Packages/stable/devel/mrtg.html
Also, look at BigBrother and NoCol. They aren't Debian packages, but do
similar things. There is a web page out there specifically on Network
Monitoring with Linux, and most of the packages will do all sorts of
monitoring.
http://www.btc.gatech.edu/net/management/linux/monitoring.html
http://www.ssc.com/lj/issue38/2140.html
Dean.
