Re: Anti-spoofing: is anyone doing it?

[Dan Hollis <goemon () anime net>]

On Sun, 27 May 2001, Hank Nussbacher wrote:
> We have found that about 5% of sites are connected to 2 ISPs but do not use
> BGP.  They use two different sets of IP addresses and point default to one
> of the two ISPs.  The return traffic will of course go to them via one of
> the two ISPs, but if you have anti-spoofing filters set up or try to set it
> up now, you will break their outgoing traffic.

They need better routers which can source route, then absolutely nothing
will break (and their return traffic wont be taking suboptimal assymetric
paths).

-Dan