Re: [tcpm] WG Last Call for ICMP Attacks
Lars Eggert <lars.eggert@nokia.com> Wed, 09 September 2009 05:48 UTC
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From: Lars Eggert <lars.eggert@nokia.com>
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Date: Wed, 09 Sep 2009 08:48:25 +0300
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To: Fernando Gont <fernando@gont.com.ar>
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Cc: "Smith, Donald" <Donald.Smith@qwest.com>, 'tcpm Extensions WG' <tcpm@ietf.org>, 'David Borman' <david.borman@windriver.com>, Joe Touch <touch@ISI.EDU>
Subject: Re: [tcpm] WG Last Call for ICMP Attacks
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On 2009-9-9, at 8:11, Fernando Gont wrote: > Could you clarify what you have in mind, specificaly? ICMP error > messages being assigned lower priority than normal traffic, or what? > FWIW, routers typically rate-limit ICMP errors... They are also sometimes forwarded at (much) lower priority, and esp. some CE devices have huge buffers that when full can lead to seconds of delay. (That's one factor why ICMPs may be arriving much later than the corresponding TCP segments, there may be others. (Who knows if some ITU-T transport network architecture defines a centralized "control plane signaling generator box" that sends out ICMPs on behalf of an entire network, for example. Yes, this is a made- up example.) Lars
- [tcpm] WG Last Call for ICMP Attacks David Borman
- Re: [tcpm] WG Last Call for ICMP Attacks Smith, Donald
- Re: [tcpm] WG Last Call for ICMP Attacks Joe Touch
- Re: [tcpm] WG Last Call for ICMP Attacks Smith, Donald
- Re: [tcpm] WG Last Call for ICMP Attacks Joe Touch
- Re: [tcpm] WG Last Call for ICMP Attacks Fernando Gont
- Re: [tcpm] WG Last Call for ICMP Attacks toby.moncaster
- Re: [tcpm] WG Last Call for ICMP Attacks Fernando Gont
- Re: [tcpm] WG Last Call for ICMP Attacks Smith, Donald
- Re: [tcpm] WG Last Call for ICMP Attacks Fernando Gont
- Re: [tcpm] WG Last Call for ICMP Attacks Smith, Donald
- Re: [tcpm] WG Last Call for ICMP Attacks Joe Touch
- Re: [tcpm] WG Last Call for ICMP Attacks Fernando Gont
- Re: [tcpm] WG Last Call for ICMP Attacks Lars Eggert
- Re: [tcpm] WG Last Call for ICMP Attacks Joe Touch
- Re: [tcpm] WG Last Call for ICMP Attacks Carlos Pignataro
- Re: [tcpm] WG Last Call for ICMP Attacks Joe Touch
- Re: [tcpm] WG Last Call for ICMP Attacks Carlos Pignataro
- Re: [tcpm] WG Last Call for ICMP Attacks Joe Touch
- Re: [tcpm] WG Last Call for ICMP Attacks Carlos Pignataro
- Re: [tcpm] WG Last Call for ICMP Attacks Joe Touch
- Re: [tcpm] WG Last Call for ICMP Attacks Anantha Ramaiah (ananth)
- Re: [tcpm] WG Last Call for ICMP Attacks Joe Touch
- Re: [tcpm] WG Last Call for ICMP Attacks Fernando Gont