Re: [IPsec] WESP - Roadmap Ahead

"Bhatia, Manav (Manav)" <manav.bhatia@alcatel-lucent.com> Fri, 13 November 2009 04:55 UTC

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From: "Bhatia, Manav (Manav)" <manav.bhatia@alcatel-lucent.com>
To: Richard Graveman <rfgraveman@gmail.com>
Date: Fri, 13 Nov 2009 10:24:27 +0530
Thread-Topic: [IPsec] WESP - Roadmap Ahead
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Cc: "ipsec@ietf.org" <ipsec@ietf.org>
Subject: Re: [IPsec] WESP - Roadmap Ahead
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Yup, that's correct I had not considered multicast.

SSM groups would use a 3-tuple SA identifier composed of an SPI, a dest mcast address, and the source IP. An Any-Source Multicast group SA would only require an SPI and a dest mcast identifier. If either of the IPs change, wouldn't the SAD lookup fail?

Cheers, Manav

> -----Original Message-----
> From: Richard Graveman [mailto:rfgraveman@gmail.com] 
> Sent: Friday, November 13, 2009 7.07 AM
> To: Bhatia, Manav (Manav)
> Cc: Daniel Migault; ipsec@ietf.org; Stephen Kent; Kaeo; 
> Merike@core3.amsl.com
> Subject: Re: [IPsec] WESP - Roadmap Ahead
> 
> I think this argument implicitly assumes unicast.
> 
> Rich Graveman
> 
> On Thu, Nov 12, 2009 at 8:18 PM, Bhatia, Manav (Manav)
> <manav.bhatia@alcatel-lucent.com>; wrote:
> > Daniel,
> >
> >> AH is a security feature we need to keep for header authentication
> >
> > Am really not sure about the value that AH adds even in 
> case of header authentication.
> >
> > So what fields does AH protect:
> >
> > Version, Payload length, Next Header, Source IP and dest IP
> >