Eavesdrop is an application for listening in on TCP conversations on the network your computer is attached to. See Notes for Newbies if you have not worked with a network sniffer before. I strongly suggest you look into other applications, such as tcpdump (available in Mac OS X 10.3 already) and Ethereal (available through fink and probably other sources).
Version 0.5a4: Compiled as a Universal Binary. Promiscuous mode and file capture both work. Added a button to save images to TIFF (thanks, Will!). Removed the "Save" and "Save As..." menu options. Although this does not address the underlying issue, it will reduce questions until the next major release, which should fix that.
TAREED Version 0.5a4 does not work for me at all. I'm not sure if this is a Snow Leopard issue or not, but when I try capturing packets on my AirPort interface, I get nothing. Worse, when I start capturing, a second copy of Eavesdrop starts bouncing on the Dock and keeps bouncing there, doing nothing, until I finally get tired of it and force quit the thing. (Version 0.5a4)
MACMEDIX Eavesdrop is really great for what it does!
If you've forgotten your email or FTP password, but it is saved as a FTP bookmark, you can use Eavesdrop to listen in on the conversation between your FTP software and the server. Since the pw is often sent in the clear, you will be able to see it as it goes by.
Just one of the useful things you can do with Eavesdrop.
Works fine with Tiger, Leopard, and maybe more OS X versions. (Version 0.5a4)
MACNERD1984 I can't get it to work. I've sat at countless places where it should be "eavesdropping" and I get nothing. Messing with the config seems to have no effect. Obviously others have got it to work or they wouldn't have posted positive reviews, so I must be doing SOMETHING wrong, but after an hour or so of meddling I fail to see what...... (Version 0.5a4)
ANONYMOUS It doesn't put the interface into promisc even though the promisc button is checked, doesn't capture UDP even when explicitly included in the filter. It seems like it could be very useful, but right now it's broken. (Version 0.5a1)
ANONYMOUS Really nice program. I only checked out a couple of things and that worked great. The only disadvantage is that I do not have any network trouble at the moment, so I can“t not fully use it :-)
The only concern I have is that it use a little bit more processing power than expected, but for such application this seems to be OK.
Keep going on with this application. Really nice work for 'free'. (Version 0.4b3)