Re: Question about IP masqing
I'm not sure. The freshmeat guys (or whomever) might have just been
guessing based on contextual clues, like ident checks failing, or
ftp connections switching to "passive". Without knowing the context
it's hard to say for sure.
On Wed, Jan 09, 2002 at 01:00:27AM +0100, Willem wrote:
> Hi,
>
> I'm trying to get to grips with all the network stuff.
> I'm still using a script from the net cause i don't feel
> confident enough to build my own yet...
>
> But one thing keeps illuding me.
> with MASQ..if a client on the local LAN makes a connection it
> will appear on the other side as if the linux/server is actually
> making the connection....so the server IP is visible...
> But i recall reading somewhere that the guys from freshmeat
> said that xx%...i think it was 80 orso...of the hits were from
> masqueraded addresses.
> Now how the hell can they tell?...because i thought
> only the server' sIP is supposed to show up....
> I assume it has something to do with analyzing what's inside
> a packet but does this also mean they can figure out the
> internal IP behind the 'real' IP from which the packet is
> originating?
>
> enlighten me:)
>
> Cheerios
>
>
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