Re: which UDP Broadcast address

"Patrick Schaaf" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> "Skybuck Flying" <[EMAIL PROTECTED]> writes:
>
> >> Directed broadcasts are practically never used.  They make nice toys
for
> >> network admins, until they are misused for the first time by some bozo.
> >> Then, they'll set their routers to block & drop them. As a consequence,
> >> except maybe in some highly controlled environments, directed broadcast
> >> is never used, because it just won't work.
>
> >How can a directed broadcast be misused ?
>
> Like any other mechanism which results in N packets answer for 1 packet
> request: by faking the source IP address of a request to be the address
> of a victim machine, and sending the request someplace where N machines
> answer. The result is an easy 1:N flood amplification, which means that
> an attacker can attack with N times its own local transmit pps capacity.

Yes... but what is the difference between a 255.255.255.255 broadcast and a
directed broadcast like 192.255.255.255 ?

Best regards,
  Skybuck.