[pptp-server] New to PoPToP, routing issues..?
Chris Storer
cstorer at infinitisystems.com
Tue Aug 21 10:51:10 CDT 2001
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
> ---------------------------------------
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