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Re: draft-ietf-ipsec-esp-01.txt (complete) ascii (fwd)
One question about ESP and transport-mode sending encrypted datagrams.
The ESP header contains only SPI, that is used to describe, what key is
used to encrypt payload, the IP protocol id is ESP ( 50 ). The rest
of ESP datatgram is opaque data.
The Tunnel mode is clear, all IP datagram is in encrypted payload, including
IP protocol ID, that descrips, what protocol (TCP/IP/ICMP) is used,
but how this is done in transport mode ? The IP prptocol ID is now ESP,
and only TCP/UDP/ICMP datagram is in the payload, where is protocol
ID of the payload ?
Kate
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! Kate Marika Alhola Internet Technologies International Oy !
! kate@digiw.fi Phone +358 49 740701 !
! kate@nic.funet.fi http://nic.funet.fi/~kate/ !
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