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 From:  Nik Clayton <nik at ngo dot org dot uk>
 To:  Lee Sharp <leesharp at hal dash pc dot org>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] PPTP from OPT1 to LAN
 Date:  Tue, 20 Sep 2005 21:22:18 +0100
Lee Sharp wrote:
> On Tue, 20 Sep 2005 10:47:58 +0100
>  Nik Clayton <nik at ngo dot org dot uk> wrote:
>> I'm a bit confused about why it's working though.  I've definitely 
>> configured the m0n0wall PPTP server to listen on  I'm a 
>> bit confused about the traffic flow.
>> If I've configued my VPN client (it's the built in one on Mac OS X) to 
>> connect to, how does it then reach the PPTP server that's 
>> running on .0.239?
> That is easy, but it requires some analogies that will kill the 
> purists.  Think of the PPTP server is sort of a virtual router.  It 
> listens on all the interfaces, but it's has a "gateway" at .239 which is 
> where you come out.  You can not see .239 until you connect, since it is 
> on the far side or the "router."  Clear as mud? :-)

Ta.  That makes some sense.

Is all this stuff documented somewhere in the m0n0 docs and I just 
missed it?

If it's not, I'll spend some time updating the wiki docs, since I 
imagine a few other folk will benefit from the information.