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

[Chris Storer]

Ok.  Just fired up a client, authenticated just fine.  Client received
10.19.33.202, with a netmask of 255.0.0.0 - is that strange??

Anyway...Here is from ifconfig for ppp0:

ppp0      Link encap:Point-to-Point Protocol
          inet addr:10.19.33.200  P-t-P:10.19.33.202  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1490  Metric:1
          RX packets:84 errors:0 dropped:0 overruns:0 frame:0
          TX packets:31 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3

Here is routing table:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
10.19.33.202    *               255.255.255.255 UH    0      0        0 ppp0
10.19.33.0      *               255.255.255.0   U     0      0        0 eth1
10.19.23.0      10.19.23.22     255.255.255.0   UG    0      0        0 eth0
10.19.23.0      *               255.255.255.0   U     0      0        0 eth0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo
default         10.19.23.1      0.0.0.0         UG    0      0        0 eth0

Here is arp table:

? (10.19.23.7) at 00:D0:B7:69:2A:81 [ether] on eth0
? (10.19.23.1) at 00:02:17:60:D6:4C [ether] on eth0
? (10.19.33.202) at * PERM PUP on eth1


Thanks for your help!

Chris Storer
IT Consultant
Infiniti Systems Group, Inc.
A Weatherhead 100 Company
www.infinitisystems.com
cstorer at infinitisystems.com

> -----Original Message-----
> From: Josh Howlett [mailto:Josh.Howlett at bristol.ac.uk]
> Sent: Tuesday, August 21, 2001 11:40 AM
> To: Chris Storer
> Cc: pptp-server
> Subject: Re: [pptp-server] New to PoPToP, routing issues..?
>
>
> 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
> >
> > _______________________________________________
> > pptp-server maillist  -  pptp-server at lists.schulte.org
> > http://lists.schulte.org/mailman/listinfo/pptp-server
> > --- To unsubscribe, go to the url just above this line. --
> >
> >
>
> ---------------------------------------
> Josh Howlett, Network Supervisor,
> Networking & Digital Communications,
> Information Systems & Computing,
> University of Bristol, U.K.
> 0117 928 7850 | josh.howlett at bris.ac.uk
> ---------------------------------------