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

Steven M. Bellovin smb at
Mon Apr 7 16:39:52 UTC 2008

On Mon, 7 Apr 2008 23:51:55 +0800 (CST)
Joe Shen <joe_hznm at> 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:

		--Steve Bellovin,

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