who is right ?

dbastien@galea.com Mon, 28 September 1998 15:46 UTC

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Date: Mon, 28 Sep 1998 12:03:45 -0400
Subject: who is right ?
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I saw in the draft-ietf-ipsec-esp-v2-06.txt :

     >  typical IPv4 packet, on a "before and after" basis. (The "ESP
     >   trailer" encompasses any Padding, plus the Pad Length, and Next
     >   Header fields.)

     >                 BEFORE APPLYING ESP
     >            ----------------------------
     >      IPv4  |orig IP hdr  |     |      |
     >            |(any options)| TCP | Data |
     >            ----------------------------
     >
     >                 AFTER APPLYING ESP
     >            -------------------------------------------------
     >      IPv4  |orig IP hdr  | ESP |     |      |   ESP   | ESP|
     >            |(any options)| Hdr | TCP | Data | Trailer |Auth|
     >            -------------------------------------------------
     >                                |<----- encrypted ---->|
     >                          |<------ authenticated ----->|


and  i read in the draft-ietf-ipsec-arch-sec-06.txt :

     > 5.1.2.1 IPv4 -- Header Construction for Tunnel Mode
     >
     >                        <-- How Outer Hdr Relates to Inner Hdr -->
     >                        Outer Hdr at                 Inner Hdr at
     >   IPv4                 Encapsulator                 Decapsulator
     >     Header fields:     --------------------         ------------
     >       version          4 (1)                        no change
     >       header length    constructed                  no change
     >       TOS              copied from inner hdr (5)    no change
     >       total length     constructed                  no change
     >       ID               constructed                  no change
     >       flags (DF,MF)    constructed, DF (4)          no change
     >       fragmt offset    constructed                  no change
     >       TTL              constructed (2)              decrement (2)
     >       protocol         AH, ESP, routing hdr         no change
     >       checksum         constructed                  constructed (2)
     >       src address      constructed (3)              no change
     >       dest address     constructed (3)              no change
     >   Options            never copied                 no change

who is right ?  The arch draft or the esp draft ?

Thanks,

Dominique
dbastien@galea.com

who is right ? dbastien
Re: who is right ? Matt Crawford