RE: [tcpm] tcpsecure: how strong to recommend?
"Anantha Ramaiah \(ananth\)" <ananth@cisco.com> Wed, 26 September 2007 23:29 UTC
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Subject: RE: [tcpm] tcpsecure: how strong to recommend?
Date: Wed, 26 Sep 2007 16:29:27 -0700
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Thread-Topic: [tcpm] tcpsecure: how strong to recommend?
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From: "Anantha Ramaiah (ananth)" <ananth@cisco.com>
To: Joe Touch <touch@ISI.EDU>
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> Anantha Ramaiah (ananth) wrote: > > Inline comments.... > ... > > - Like someone pointed out MAY is a weak statement, it could also > > imply "MAY not". Why should it be a MAY when we know that > the pros of > > the soultion outweigh the cons? > > They do not in all cases. If TCP is deployed either where no > well-known connections exist, or where such connections are > protected by other authentication, this solution adds > a) complexity "complexity" and the strength of mitigation cannot be tied together, IMO. Almost every solution that tries to add/modify/delete some TCP behaviour does add complexity to TCP processing. That said, we have already debated in the past, about the so called "complexity" of these solutions. > b) chatter during valid RSTs You mean an extra RTO? Ok, fair enough. But, benefits outweigh drawbacks, I would think. > c) IPR encumberance AFAIK, this is not an issue as this was beaten to death before. > > > - to me these recommendations are good to have, > > You're now making decisions for others, i.e., these > recommendations are "good for everyone to have unless they > have a reason not to". That's not what you said before in > terms of "let the user/implementer decide". "Good to have" since it improves TCP robustness and quality, this is my viewpoint. This is different from "making decisions for others". > > ... > >> There's no MUST in that logic, any more than 'you MUST deploy > >> IPsec/BTNS/TCP-MD5++'. > > > > I am assuming it is a conditional MUST like "if you need > security then > > use TCP MD5", correct? Is "conditional MUST = SHOULD" ? > > It is a conditional SHOULD, i.e., a SHOULD with a caveat. > From the RFC2119-level, IMO that's a MAY with explanation. Curious : Are you ok tagging the TCP secure mitigations with a "conditional SHOULD" or "SHOULD with caveat" or "an applicability statement with a SHOULD"? I am assuming that these are equivalent to MAY with explanation? -Anantha _______________________________________________ tcpm mailing list tcpm@ietf.org https://www1.ietf.org/mailman/listinfo/tcpm
- [tcpm] tcpsecure: how strong to recommend? Mark Allman
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Fernando Gont
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- Re: [tcpm] tcpsecure: how strong to recommend? Pekka Savola
- RE: [tcpm] tcpsecure: how strong to recommend? Agarwal, Anil
- Re: [tcpm] tcpsecure: how strong to recommend? Wesley Eddy
- Re: [tcpm] tcpsecure: how strong to recommend? David Borman
- Re: [tcpm] tcpsecure: how strong to recommend? Lars Eggert
- RE: [tcpm] tcpsecure: how strong to recommend? Agarwal, Anil
- Re: [tcpm] tcpsecure: how strong to recommend? Ted Faber
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Tom Petch
- RE: [tcpm] tcpsecure: how strong to recommend? Mitesh Dalal (mdalal)
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- Re: [tcpm] tcpsecure: how strong to recommend? Tim Shepard
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Tim Shepard
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- RE: [tcpm] tcpsecure: how strong to recommend? toby.moncaster
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- [tcpm] BTNS usage for BGP Pekka Savola
- [tcpm] Re: BTNS usage for BGP Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Mitesh Dalal (mdalal)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Mark Allman
- Re: [tcpm] tcpsecure: how strong to recommend? Edward A. Gardner
- RE: [tcpm] tcpsecure: how strong to recommend? Mitesh Dalal (mdalal)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Lars Eggert
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- RE: [tcpm] tcpsecure: how strong to recommend? Anantha Ramaiah (ananth)
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Ted Faber
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Ted Faber
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Ted Faber
- Re: [tcpm] tcpsecure: how strong to recommend? touch
- Re: [tcpm] tcpsecure: how strong to recommend? touch
- Re: [tcpm] tcpsecure: how strong to recommend? Ted Faber
- Re: [tcpm] tcpsecure: how strong to recommend? Ted Faber
- Re: [tcpm] tcpsecure: how strong to recommend? Ted Faber
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch
- Re: [tcpm] tcpsecure: how strong to recommend? Joe Touch