[pptp-server] Arp / Routing problems..

[Andy Frost]

I have a poptop setup that works ok appart from not being able to ping
from the remote machine to the Lan machine.  I have setup the following
test network as below, and the winnt box can ping the win98 machine when
connected but not vice versa.  The linux poptop box can ping all ip
address's ok.  I know this seems very much simular to the first question
in the how/to, but I've tried all the stuff associated with arp & PPP
defaultroute on the poptop that is suggested. eg arp -s 192.168.90.89
00:00:B4:59:2A:B0 on the poptop box.  I've also tried putting the VPN
and the PPP on different subnets to 192.168.90.x but still no luck.  Are
my gateways or routes setup wrong I'm not sure?   


Remote/
Internet Win98            Linux Suse6.2 Poptop                WindowsNt/

                                                              LAN
I------------I   eth   I --------------------------I  eth
I--------------I                       
I192.168.1.4*I---------I192.168.1.5*
192.168.90.5*I----------I192.168.90.89*I    
I            I         I                           I          I
I   
IVPN  90.194 I---------I 90.193 PPP0               I          I
I       
I------------I VPN/PPP I---------------------------I
I--------------I

 

    

 

/etc/pptpd.conf
speed 115200  
localip=192.168.90.193-200
remoteip=192.168.1.6


Win 98 Settings
	Eth             VPN              PPP0
IP      192.168.1.5     192.168.90.193   192.168.1.6
Mask    255.255.255.0   255.255.255.0    255.255.255.0
G/W	 -              192.168.1.5      192.168.1.5


Poptop
	eth1             eth0            PPP0 (same as above ppp0)
IP      192.168.1.5     192.168.90.5     192.168.1.6
Mask    255.255.255.0   255.255.255.0    255.255.255.0
G/W	-               -                192.168.1.5

Windows NT
	eth1            
IP      192.168.90.89    
Mask    255.255.255.0   
G/W	192.168.90.5 
MAC     00-00-B4-59-2A-B0            


Routing on linux before PPP/VPN connection
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
192.168.1.0     *               255.255.255.0   U     0      0        0
eth1
192.168.90.0    *               255.255.255.0   U     0      0        0
eth0
loopback        *               255.0.0.0       U     0      0        0
lo


Routing on linux when connected
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
192.168.1.6     *               255.255.255.255 UH    0      0        0
ppp0
192.168.1.0     *               255.255.255.0   U     0      0        0
eth1
192.168.90.0    *               255.255.255.0   U     0      0        0
eth0
loopback        *               255.0.0.0       U     0      0        0
lo
default         192.168.1.6     0.0.0.0         UG    0      0        0
ppp0

thanks in advance
Andy Frost