Re: Any tool or theorical method on detecting number of computer behind a NAT box?

[Steven M. Bellovin]

On Mon, 7 Apr 2008 23:51:55 +0800 (CST)
Joe Shen <[EMAIL PROTECTED]> wrote:

> 
> hi,
> 
>Sharing internet access bandwidth between multiple
> computers is common today. 
> 
>Usually, bandwidth sharer bought a little router
> with NAT/PAT function. After connecting that box to a
> ADSL/LAN access link, multiple computer could share a
> single access link.
> 
>I heard some company provide prdouct for detecting
> number of computers behind NAT/PAT box. 
> 
>Is there any paper or document on how such product
> work? where could I fint them ?
> 
THere was a paper of mine from a few years ago:
http://www.cs.columbia.edu/~smb/papers/fnat.pdf


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

Any tool or theorical method on detecting number of computer behind a NAT box?

[Joe Shen]

hi,

   Sharing internet access bandwidth between multiple
computers is common today. 

   Usually, bandwidth sharer bought a little router
with NAT/PAT function. After connecting that box to a
ADSL/LAN access link, multiple computer could share a
single access link.

   I heard some company provide prdouct for detecting
number of computers behind NAT/PAT box. 

   Is there any paper or document on how such product
work? where could I fint them ?


  Joe


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