Best used to monitor a network......
.....and NOT your girlfriend! Recently in the news for assisting some bloke to catch his woman cheating, Ethereal is a handy packet sniffer that will capture and decode everything that is going through a network. Why you would want to see what your lady friend is chatting about is totally up to you, but with this tool you can do it pretty easily.
Takes a bit of time to get used to, especially if your on a busy connection. Make good use of the filters and you'll be able to check practically any element of the network traffic whether over a wired connection or a wireless.
Records all your network traffic, Lets you see what it's being used for, chat conversations, web pages, passwords, etc.
A bit difficult to use effectively. Can catch you cheating. Can be used to find out passwords, or crack a wireless connection More