Net limiter the version i used (the free version) only monitored your single personal computer's downloading/uploading and not the network. The paid version may monitor the entire network.
I don't mean to hijack this Thread but I have the same question. Once the software is installed does it check upload/downloads done on that computer or does it monitor the upload/download for the network to which it is connected?
Make sure you use the 2nd version, version 3 sucks.