* I haven't used any myself, but apparently there are several software * packages out there with a pretty graphical front end, complete with * Hollywood-style "Click to destroy machine" buttons and menus. * *Uh huh, right. If you ever actually see anything like this, lemme know. Ok, RS. One piece of software is called UpYours! and it's a mailbombing tool built by a group called "Global kOS" to run over Windows95. It's got a lovely interface including buttons for "BOMB" "ULTRA" and "STOP" with an input window for "Countdown" start & stop How did the topic get changed from packet-spewing attacks to application-layer attacks? About the only thing UpYours has to do with synflooding a machine is that they can both generate a bit of network traffic. Besides, mailbombings are directed at users, not hosts (though they have a tendency to take down the latter as collateral damage). Bottom line: mailbombing is just an abuse of resources, not an "exploit" to kick a machine over; in fact, Sendmail has circuit breakers in it to keep it from taking down a machine by sheer load (running out of space in the mail spool is a different issue). As the unlucky recipient of mailbombing attacks from several sources including the illustrious Fred Cohen, I have found mailbombing attacks to be pretty trivial to defend against anyway. ---Rob