>>84
Not FrozenVoid here, but that's a really dumb reason not to filter UDP traffic. It's like saying you don't need a lock on your door because a burglar could just pick it anyway.
Doing something like a SYN flood requires more knowledge of the bots' OS. Since botnets are very likely to be on Windows machines, do note that after XP SP2 it is impossible to just use the Winsock API to send raw TCP packets. Therefore knowledge/understanding of the Windows kernel and the ability to program drivers is required to do a SYN flood from XP SP2 or later. An UDP flood is very simple to implement for any 15-year old wannabe hacker, a SYN flood is harder. This is equivalent to the lockpicking skills needed for the burglar in the earlier example.