VPN access over cable modem

  • Thread starter Thread starter Tim
  • Start date Start date
T

Tim

one of our employees at work is trying to use our VPN. Their home network
is 192.168.0.xx which is set by the cable modem. They claim they cannot
change that address (Comcast apparently does not allow them to do this and
they have tried to change the cable modem settings with no success.) Our
work network is also 192.168.0.xx

They can connect to the VPN server (a netopia router) but cannot access
anything on the work network. It looks like to me that the routing table
shows they do not have a valid path to the work network.

0.0.0.0 0.0.0.0 192.168.0.1
192.168.0.10 21
0.0.0.0 0.0.0.0 192.168.0.153
192.168.0.153 1
.....
....
192.168.0.0 255.255.255.0 192.168.0.10 192.168.0.10
20
192.168.0.10 255.255.255.255 127.0.0.1 127.0.0.1
20
192.168.0.153 255.255.255.255 127.0.0.1 127.0.0.1
50
....
....

Default Gatewy: 192.168.0.153

where the host is 192.168.0.10, the cable modem is 192.168.0.1 and the vpn
adapter ip is 192.168.0.153 (assigned by DHCP.) If I understand this
correctly, any attempts to access 192.168.0.2 (over the VPN) would route to
the local lan following 192.168.0.0 which states that the next-hop is the
destination.

Is this correct? Is the solution to change the route table while connected
to the VPN? If so, any suggestions would be appreciated... (I would like
them to change their home netowrk, but so far no luck.)

Thanx!
 
Tim said:
one of our employees at work is trying to use our VPN. Their home network
is 192.168.0.xx which is set by the cable modem. They claim they cannot
change that address (Comcast apparently does not allow them to do this and
they have tried to change the cable modem settings with no success.) Our
work network is also 192.168.0.xx

They can connect to the VPN server (a netopia router) but cannot access
anything on the work network. It looks like to me that the routing table
shows they do not have a valid path to the work network.

0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.10
21
0.0.0.0 0.0.0.0 192.168.0.153 192.168.0.153
1
....
...
192.168.0.0 255.255.255.0 192.168.0.10 192.168.0.10
20
192.168.0.10 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.0.153 255.255.255.255 127.0.0.1 127.0.0.1 50
...
...

Default Gatewy: 192.168.0.153

where the host is 192.168.0.10, the cable modem is 192.168.0.1 and the vpn
adapter ip is 192.168.0.153 (assigned by DHCP.) If I understand this
correctly, any attempts to access 192.168.0.2 (over the VPN) would route
to the local lan following 192.168.0.0 which states that the next-hop is
the destination.

Is this correct? Is the solution to change the route table while
connected to the VPN? If so, any suggestions would be appreciated... (I
would like them to change their home netowrk, but so far no luck.)

Thanx!
Click to expand...

Correct, the same subnets on different locations won't work at all. A link:
yes, traffic: no.
Solution: give your employee a router to place after his modem. This way
he/she will be able to use another subnet.

Marcel
 
Try using an lmhosts file. I had a problem with my home users that were
connecting to their network and our network. They weren't able to see or
map any drives. The lmhosts file forces (I think) their browser to look on
the remote (VPN) network. This has worked for me.

John
 
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