Re: [tcpm] comments on draft-ietf-tcpm-icmp-attacks-05
Joe Touch <touch@ISI.EDU> Sun, 14 June 2009 14:57 UTC
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Date: Sun, 14 Jun 2009 07:56:51 -0700
From: Joe Touch <touch@ISI.EDU>
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Cc: "tcpm@ietf.org" <tcpm@ietf.org>, Fernando Gont <fernando@gont.com.ar>, Fernando Gont <fernando.gont@gmail.com>
Subject: Re: [tcpm] comments on draft-ietf-tcpm-icmp-attacks-05
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Florian Weimer wrote: > * Fernando Gont: > >>> For instance, I'm not certain that setting the DF bit is only >>> possible for hosts that support PMTUD ... is there a reference for >>> that? >> What's the reason for setting the DF flag for IP packets carrying TCP >> segments if you don't implement PMTUD? > > You don't have to put randomness into the IP ID field (at least in > theory; in practice, DF=1 packets get fragmented, too). Technically, you do regardless of whether the bit is set or not right now. Hopefully that requirement will change, but only when we change the standards. See draft-touch-intarea-ipv4-unique-id-01 Joe -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAko1D7MACgkQE5f5cImnZrv07wCeIxIAW7lXUAna3Acw0VVI/iBL IHMAoJPNRmTktfTRtZRmZzrDm+uBL/Yz =FkzW -----END PGP SIGNATURE-----
- [tcpm] comments on draft-ietf-tcpm-icmp-attacks-05 Eddy, Wesley M. (GRC-MS00)[Verizon]
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Eddy, Wesley M. (GRC-MS00)[Verizon]
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Eddy, Wesley M. (GRC-MS00)[Verizon]
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Fernando Gont
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Fernando Gont
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Joe Touch
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Joe Touch
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Eddy, Wesley M. (GRC-MS00)[Verizon]
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Fernando Gont
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Florian Weimer
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Florian Weimer
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Joe Touch
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Joe Touch
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Fernando Gont
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Fernando Gont
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Fernando Gont
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Joe Touch
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Joe Touch
- Re: [tcpm] comments on draft-ietf-tcpm-icmp-attac… Fernando Gont
- [tcpm] TCP-AO and ICMP attacks (was Re: comments … Fernando Gont
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Joe Touch
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Fernando Gont
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Joe Touch
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Fernando Gont
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Joe Touch
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Fernando Gont
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Joe Touch
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Fernando Gont
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Joe Touch
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Fernando Gont
- Re: [tcpm] TCP-AO and ICMP attacks (was Re: comme… Joe Touch