On Thu, 2 Aug 2018, John Levine wrote:
In article <[email protected]> you
write:
Multicast is being used in various private IP networks. It seems to work
very well for satellite content distribution because multicast doesn't
require ack's. Enterprise networks also use multicast.
I would think it'd work fine on private networks, but since there's no
authentication, on the public Internet how could you tell the
multicast you want from random malicious junk on the same IP address?
They use some type of encryption to authenticate the data.
Satellite distribution networks usually encrypt both the satellite signal
so only authorized receivers get the download. The multicast data files
are also separately encrypted/signed/checked.
On private/enterprise networks, I guess they just trust its a controlled
network.
On the public Internet. Gosh darn, I don't know, shrug?
