Re: a record?

["Steven M. Bellovin" <smb () cs columbia edu>]

In message <43791C64.4050500 () linuxbox org>, Gadi Evron writes:
>

> You don't have to scan an entire /64 ( :) ).
>
> You can sniff network traffic and see what IP addresses you see, then 
> scan only close ranges to those.
> You can create a DB or download one, with addresses of known used spaces.
>
> You can throw out thousands of random packets, finding used spaces.
>
> You can do a lot of things, some smarter and mathematical, others just 
> sensible. If I could come up with 3 silly solutions in 2 seconds, I bet 
> the Bad Guys will do far better when the time comes, if it ever does. I 
> am of a mind that we need IPv-NEXT-ONE (or whatever) to deal with actual 
> problems before we undertake IPv6, but that's just an opinion and 
> therefore completely wrong.

Yes.  Angelos Keromytis, Bill Cheswick, and I have a paper on this that 
will be out shortly.

                --Steven M. Bellovin, http://www.cs.columbia.edu/~smb