[pptp-server] PPTP masquerade

[Josh Howlett]

Is this a limitation/feature of poptop?  I've read of ppl doing it with
Windows PPTP server.

thx, josh.

On Fri, 22 Jun 2001, Justin Kreger wrote:

> You cannot do that, It won't work.
> 
> Justin Kreger, MCP MCSE CCNA
> jkreger at earthling.2y.net jwkreger at uncg.edu justin at wss.net
> 
> 
> On Fri, 22 Jun 2001, Josh Howlett wrote:
> 
> > 
> > 
> > Hi all,
> > 
> > Has anyone managed to masquerade PPTP clients and got them to talk to
> > pptpd?  I'm working on the following set-up:
> > 
> >  PPTP client-\
> >              |
> >  PPTP client---Masq--(ip)--PPTP server
> >              |
> >  PPTP client-/
> > 
> > It works fine for a single PPTP client, but if a second attempts to
> > connect to the same server I get this:
> > 
> > Jun 22 10:52:58 cypri pptpd[23386]: CTRL: Client 137.222.12.160 control
> > connection started
> > Jun 22 10:52:58 cypri pptpd[23386]: CTRL: Starting call (launching pppd,
> > opening GRE)
> > Jun 22 10:52:58 cypri pptpd[23327]: Discarding out-of-order packet 1,
> > already have 216
> > Jun 22 10:52:58 cypri pppd[23387]: pppd 2.4.0 started by root, uid 0
> > Jun 22 10:52:58 cypri pppd[23387]: Using interface ppp1
> > Jun 22 10:52:58 cypri pppd[23387]: Connect: ppp1 <--> /dev/pts/2
> > Jun 22 10:52:58 cypri pptpd[23386]: Buffering out-of-order packet; got 1
> > after 4294967295
> > Jun 22 10:52:58 cypri pptpd[23327]: Discarding out-of-order packet 2,
> > already have 216
> > Jun 22 10:52:58 cypri pptpd[23386]: Packet reorder timeout waiting for 0
> > Jun 22 10:52:58 cypri pptpd[23386]: Buffering out-of-order packet; got 2
> > after 0
> > Jun 22 10:52:58 cypri pptpd[23386]: Missing 12 consecutive packets; got
> > 217 after 2
> > Jun 22 10:52:58 cypri pptpd[23327]: Discarding out-of-order packet 3,
> > already have 217
> > Jun 22 10:52:58 cypri pptpd[23386]: Discarding out-of-order packet 3,
> > already have 217
> > Jun 22 10:52:58 cypri pptpd[23327]: Discarding out-of-order packet 4,
> > already have 217
> > Jun 22 10:52:58 cypri pptpd[23386]: Discarding out-of-order packet 4,
> > already have 217
> > Jun 22 10:53:01 cypri pptpd[23327]: Discarding out-of-order packet 5,
> > already have 217
> > 
> > I've read (and followed) the VPN masquerade HOWTO, and it says that this
> > set-up is possible assuming the server allow multiple control channels
> > to the same IP address.
> > 
> > Does poptop allow this?  Or could I being doing something else wrong?
> > 
> > thanks, josh.
> > 
> > ---------------------------------------
> > Josh Howlett, Network Supervisor,
> > Networking & Digital Communications,
> > Information Systems & Computing,
> > University of Bristol, U.K.
> > 0117 928 7850 | josh.howlett at bris.ac.uk
> > ---------------------------------------
> > 
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> > 
> 
>