Not to be outdone by BJ with all his fancy schmacy Mac OS X program Etherpeg, I figured there just had to be a Linux equivalent. Well, luckily there was in the form of Driftnet. Easy to install with it only requiring libpcap, libjpeg, libungif and GTK to get build. Oh, and a root password to let the adapter doing the sniffing to drop into promiscuous mode, but you already had that right? 😉
Here’s an example of it running on my laptop:
Unfortunately since we’re running on a switched network here at work, I can’t sniff anyone else except myself. Perhaps I’ll have to try it out over wireless in the cafeteria here at work. 8)