[pptp-server] New to PoPToP, routing issues..?

[Josh Howlett]

Hi,

Post your routing and arp tables when the client is connected.

josh.

On Tue, 21 Aug 2001, Chris Storer wrote:

> Hi.  I just recently got the PoPToP pptpd server up and running.  Got
> everything patched and recompiled without incident, and it works beautifully
> for authentication with MS clients.
> 
> The problem I'm having is that traffic from pptp clients is not routing
> to/from the LAN that the pptp server is on.  Once a client authenticates, I
> can ping either IP address on the pptp server (it's multi-homed, bridging
> between 2 LANS), but I can't ping either LAN beyond the pptp server.
> 
> The setup looks something like this... (Please pardon my horrid artwork!)
> 
> 
>                10.19.33.1|---------|10.19.23.22
> 10.19.33.0<--------------|pptpserv |----------------->10.19.23.0
>                          |_________|
>                               |
>                               |pptp client
>                               |10.19.33.201
>                               V
> 
> There is also, on the 10.19.23.0 network, a Cisco router that does 1-1 NAT,
> providing a static DNAT mapping from a public IP to 10.19.23.22
> 
> Once the client authenticates, I can ping both 10.19.33.1 and 10.19.23.22
> (the 2 ip's on the server).
> 
> I can also ping the IP's assigned to the pptp tunnel, although I think I may
> be a little confused on the configuration of these.  Currently, in my
> /etc/pptpd.conf file I have:
> 
> localip 10.19.33.200
> remoteip 10.19.33.201-205
> 
> In the sample pptpd.conf provided with PoPToP it says you can use just 1
> localip if desired, so I'm assuming this is ok.  I'm not sure if the local
> and remote can be in the same range...?
> 
> Although I'm not very good with routing, the routing tables appear ok.  Once
> the client authenticates there is a route statement for the client's IP on
> ppp0.
> 
> IP forwarding is enabled, and I am running iptables, although at this point
> all chains are empty and set to default ACCEPT, so I don't believe that's
> the problem... I am able to move traffic between 10.19.23.0 and 10.19.33.0
> locally...
> 
> Any insights highly appreciated.  I really feel like I'm missing something
> stupid here, I'm hoping that's the case!  Thanks in advance for any
> information!
> 
> Chris Storer
> IT Consultant
> Infiniti Systems Group, Inc.
> A Weatherhead 100 Company
> www.infinitisystems.com
> cstorer at infinitisystems.com
> 
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> 

---------------------------------------
Josh Howlett, Network Supervisor,
Networking & Digital Communications,
Information Systems & Computing,
University of Bristol, U.K.
0117 928 7850 | josh.howlett at bris.ac.uk
---------------------------------------