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Re: Réf. : Re: Encryption control of SNDU
Tarif.Zein-Alabedeen@space.alcatel.fr wrote:
Well, L3 IPsec vs L2 encryption is rather an old debate.
Yes, and far from me the will to initiate a flame war ;-)
Any way, L2 encryption is almost always asked for by satellite providers to
allow intrinsic securtiy within the system
independantly of L3 security. IPsec is an option which is not always
applied.
How many poeple do have their DSL link secured with IPsec?
if this is not dramatic in a wired system since it is rather difficult to
snif your DSL line, a wireless system is rather vulnerable.
I don't really buy those arguments, but I think this debate is out of
scope of this WG ;-) but I'm ready to have a discussion with you
off-list.
That is why such L2 securtiy has been provisioned for dvb-rcs systems.
Encryption at MPEG layer as suggested in the requirements ID
(draft-fair-ipdvb-req-04.txt) can not allow a per receiver keying
If such a solution is not put into ULE, it may simply turn to be
inapplicable to dvb-rcs systems :(
If such L2 encryption is unavoidable, can it be managed (including
keying etc ...) at pure MPEG-2 level ? i.e. there's an encryption
done for all traffic using a (some) PID(s), which leaves ULE quite
un-concerned ?
Cheers.
Alain.
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Alain RITOUX
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