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List:       ntop-dev
Subject:    RE: [Ntop-dev] Masquerade aware
From:       "Burton M. Strauss III" <BStrauss3 () attbi ! com>
Date:       2002-04-12 20:15:20
Message-ID: JIEPJGFPFMFIGBNCPKGGCEIMCFAA.BStrauss3 () attbi ! com
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Snipping your 2nd question out of the message (PLEASE: One question with a
meaningful title per message thread)...

Short answer: No


In Linux, I'm half sure it COULD be done, because the data is available via
the /proc interface - IF the Linux box is the masqing device.  However, if
it is the masq device, then you don't need to do this, because the inside
interface sees un masqed traffic!

I don't know about other OS - it would depend on having the masq mapping
table available.

If ntop isn't running on the masqing device, then I don't believe ntop can
monitor the traffic and figure out the mapping table (unless you store each
packet, how do you figure out which is which??)

-----Burton


-----Original Message-----
From: ntop-dev-admin@unipi.it [mailto:ntop-dev-admin@unipi.it]On Behalf
Of Martijn Schoemaker
Sent: Wednesday, April 10, 2002 9:48 AM
To: ntop-dev@unipi.it
Subject: [Ntop-dev] Multihomed/PPP/PPTP and NTOP


<snip>
And last I would like to know if it is possible to make NTOP masquerade
/NAT aware so it actually can show what NAT sessions are currently
used since now all my internal traffic shows up as if it originated from my
local gateway. I know this is not easy and I will look into this myself
also, but if anyone else is already working on this, please lemme know.


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