Re:It's DoS (Score 4)

I'd guess that this is the work stream.c, a ip stack bug which panics/freezes(resource wise) and is not FreeBSD specific. One of the original bugtraq post actually included a Linux kernel panic line from dmesg. Reports were also sent in that NT servers were down aswell. Stream works by creating as many open files/sockets as the system will allow thereby rendering it useless and from what I've read that its effectivness is proportional to the volume of packets sent so modifying the standard distributed dos tool to send stream packets and therefore downed yahoo. Chances are the only reason yahoo got attacked was because it was there not because it was the only large network that had that hole in it network stack.
-Nick Chernyy
P.S. for all of you paranoid FreeBSD users, there is a patch available and has been merged into the sources long ago.