What were we saying about edge filtering?

Thu Sep 4 18:33:43 UTC 2003

[multiple response]

Christopher L. Morrow wrote:

> I'm going to take a stab at: The next 69.0.0.0/8 release? Certainly there
> was some lesson learned from this, no?

I don't buy it, Chris. Are you saying that a large backbone provider 
can't maintain up-to-date bogon filters? In fact, I'd say they would be 
better at it, and if they were using the filters, then there would be 
less need for their customers to apply the filters and we'd have less 
bogon issues in the future.

Owen DeLong wrote:
 > Source address-based filtering in the backbone is expensive and, in
 > many cases, non-feasible.

Most vendor equipment is easily capable of handling bogon filtering 
using any number of methods. This is particular true when filtering 
packets that are not announced bogons (such as most dDOS spoof attacks), 
even if announced bogon packets are allowed through.

-Jack