Re: broadcast on internet

manish wrote:
> hello
> is there any way to broadcast data on the internet ( to all the systems
> around the world ). ?
> if no, how do the architecture restricts such an attemp ?
>
> any help would be appreciated ..
>
> thanx.
>

>From what I remember, routers are supposed to block UDP broadcast
from leaving the LAN. In any case, they are not supposed to reach every
computer on the Internet. However, if you own a class D IP address then
you can use multicast. Class D IPs are in the range 224.0.0.0 to
239.255.255.255 (inclusive). The 244.0.0.0 address should not be used
as it's reserved. To receive a multicast UDP datagram you are supposed
to join a multicast group so there's another reason you cannot broadcast
packages to all the computers on the Internet.
Can you imagine the size of the DDoS attacks if that was possible? :-).
I am not an expert in networking so, if no one else answers or even if
someone does, you should try your luck with groups that discuss
networking.


--
Ioan - Ciprian Tandau
tandau _at_ freeshell _dot_ org (hope it's not too late)
(... and that it still works...)
.

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