You have several pieces of software that perform the same things graphically and provide visualization of statistics; some of them are as follows:
- Xplico: http://www.xplico.org/
- NetworkMiner: http://www.netresec.com/?page=NetworkMiner
When you see an unknown website with an application that you don't know and a filename that looks suspicious, Google it; it might be a risk (we will get back to this in the security chapter).