Re: [tcpm] ICMPv6 Error Handling at TCP draft-fujisaki-tcpm-icmpv6-reaction-00.txt

At 03:41 p.m. 21/03/2007, Tomohiro -INSTALLER- wrote:

>  | The ICMP attacks draft is aiming at Informational, too. Yet virtually
>  | all vendors have implemented most of it. Nobody ever bothered whether
>  | it was Std track or Informational.
>
>Is it in reverse order, isn't it?  Many vendors implement not to
>disconnect established TCP session because it would have security
>risks. And then ICMP attacks draft was written, as far as I read ML
>archives.

BSD systems do not abort established connection in response to ICMP 
messages because the developers thought that that would negatively 
affect robustness. Those implementations that implemented this 
behavior in the last three years or so did that in response to the 
ICMP attacks draft.

>  | If your specific problem arises from use of IPv6, then you can send
>  | the vendor (Microsoft?) the soft errors draft, and even direct them
>  | to the v6fix site. If that's not enough, I guess the only thing left
>  | is to have their clients tell them that it really sucks to have to
>  | wait dozens of seconds to browse a web page.
>
>Sorry for repeatedly, but we think soft errors draft does not provide
>enough information to implement the TCP reaction. We are afraid every
>system react differently when it receives ICMP errors.

Perfect. Do you have any specific suggestion on how to improve the 
draft, so it addresses your concerns?

Kindest regards,

-- 
Fernando Gont
e-mail: fernando@gont.com.ar || fgont@acm.org
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1

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