Re: SYN spoofing

[Dan Hollis <goemon () sasami anime net>]

On Wed, 28 Jul 1999, Jeremy Porter wrote:
> In message <Pine.LNX.4.10.9907281242140.18497-100000 () anime net>, Dan Hollis wr
> ites:
> > Anyone for a weekly 'bogons transit list'?
> The problem being, that you would need to know where these packets
> originated, and if you knew that, you could probably get the problem
> fixed in the first place.

You really think so? Some of us have tried to persuade the 'big names' to
filter completely bogus source addresses, and were blown off.

> Lack of a soci-technological solution for interprovider backtracing
> limits the utility of this, and since you can't really pin point the 10
> ten bogon transit providers you don't have much ability to shame people
> into fixing their stuff.

You can at least conclusively show who is transporting the
invalid-source-address-packets to the endpoint. That is, conclusively show
that the next-to-last-hop isnt properly filtering.

-Dan