North American Network Operators Group
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Re: what's that smell?

  • From: Joe Abley
  • Date: Tue Oct 08 11:01:28 2002


On Tuesday, Oct 8, 2002, at 10:45 Canada/Eastern, Iljitsch van Beijnum wrote:

On Tue, 8 Oct 2002, Joe Abley wrote:


Also, egress filtering is NOT easy,



What is difficult about dropping packets sourced from RFC1918
addresses

before they leave your network?


But what's the point?




Politeness, I guess. Seems rude to send traffic to peers when you
absolutely know that the source address is inaccurate.




That's like complaining that the door isn't locked while the house has
no

walls.



Right. The no walls problem is far more usefully tackled by filtering
inbound at the edge, not outbound.





Joe