ICMP Blocking Woes

John Kristoff jtk at depaul.edu
Wed Oct 1 00:36:23 UTC 2003


On Tue, Sep 30, 2003 at 05:22:25PM -0700, Crist Clark wrote:
> > Wasn't this based upon the premise that gear should not return ICMP
> > errors as a result of ICMP packet input as a precaution against error
> > loops? ie said dodgy router did the _right_ thing?

> That would be disingenious. RFC1122 clearly lists which ICMP are error
> messages,

The following from W. Richard Stevens' archive presents some additional
insight:

  <http://www.kohala.com/start/papers.others/vanj.99feb08.txt>

John



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