[vpn-help] VPN up, but no traffic to any destination

Ben Barker ben at bbarker.co.uk
Mon Feb 28 16:07:48 CST 2011


Hello,

I am running shrewsoft 2.1.7 on Ubunto 10.1 x64
All seems fine - I can open my VPN succesfully according to the client

However, when it is open, I loose all connectivity to the internet and local
LAN, but do not get any access to my remote network.

Before my VPN is up, I have my routing tabel as:

Kernel IP routing table
Destination     Gateway             Genmask         Flags Metric Ref    Use
Iface
192.168.1.0     *                       255.255.255.0   U       1
0        0   eth0
link-local         *                       255.255.0.0       U       1000
0        0   eth0
default            O2wirelessbox.l 0.0.0.0              UG     0
0        0   eth0

After, I have:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
81.134.112.110      192.168.1.254   255.255.255.255 UGH  0      0        0
eth0
192.168.1.0            *                      255.255.255.0   U      1
0        0 eth0
*192.168.13.0          192.168.14.51   255.255.255.0   UG    0      0
0 tap0*
link-local                 *                     255.255.0.0       U
1000   0        0 eth0
default                    192.168.1.254  0.0.0.0             UG    0
0        0 eth0

Where the IP address allocated to my virtual adapter is on the 192.168.14.x
subnet, and my destination is the 192.168.13.x subnet

Any ideas what I am doing that is causing the VPN to apparently be brought
up, but then causing no traffic at all to be routable?

Cheers,

Ben
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