[pptp-server] Arp Problems? (no data transfer to other hosts on servers subnet)

[tmk]

This is sort of confusing to me, but here's the impression i get:

you have a windows box on teh same ethernet wire as a linux box, and the
linux box has an isdn line that connects to your work network, which in
turn connects to the internet somehow.

first off, i don't think you need masqing at all. You might need to add
routes to the routing table (linux box)to get your computer to see
everything. Be sure to tell your windows machine the default gateway that
goes out to the internet.

Just FYI, windows has the nasty habit of sending everything through the
vpn link regardless of the routing table you have set up at home, so if
you connect to the pptp server with tcp, tcp will only work on that link.

Kevin

On Fri, 10 Sep 1999, Matt Stockdale wrote:

> I downloaded and installed the latest version of poptop on one of my
> internet gateway machines. I am trying to connect to it from home.. I
> have an interesting situation where I am attempting to use the MS VPN
> client to actually get _out_ of a protected network. I have a RH linux
> 5.2 box at home that
> connects to work via ISDN. I have a Win98 box connected to my home linux
> box via ethernet. I have the VPN masq patches in place on the linux box.
> I places the PPTP server on a dual homed machine that has access to both
> our internal network (reserved addresses 172.27.0.0) and our internet
> feed. The VPN client connects fine, and the PPTP server (masq) can ping
> it, accept telnets from it, etc, just fine.
> the problem is, once I connect the VPN client on my windows box I can't
> connect to anything else but masq.
> 
> I have tried having the PPTP server assign both it's own internet
> address and a spare internet address, and a 2nd spare internet address
> is assigned to the VPN client. logging into our internet router, I
> cannot ping the VPN IP, but it does show up w/ the same MAC address as
> the PPTP host when I do a "show arp"..
> 
> ip_forwarding and proxy_arp is enabled for _all_ interfaces on the PPTP
> host.
> 
> I can't seem to find any errors, other that it just plain not working.
> 
> 
> +----------+             +----------+              
> +-----------+             +-------------+
> | Win98    |             |RH 5.2    |               |ISDN
> Server|             |PPTP Server  |
> | VPN clnt |-------------|masq+vpn  |---------------|          
> |-------------|             |-inet
> +----------+             +----------+              
> +-----------+             +-------------+
> 
> connects to		ISDN working                this is actually		can ping VPN 
> pptp server					    the whole internernal	client
> fine						    network
> 
> Any ideas?
> 
> Thanks,
> Matt
> 
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