Re: [Openvpn-users] No traffic beyond the server from the client ...

["Lists Soderlund.org" <lists@xxxxxxxxxxxxx>]

Erich Titl wrote:
> Niclas
>
> Lists Soderlund.org wrote:
>
> > ...
> > Hi!
> >
> > Oops, actually, I was just testing at the moment, and when I changed 
> > that back this is what I get instead for a routingtable (still the 
> > same problem, no traffic is forwarded or at least not responded to):
> >
> > dns:/etc/openvpn# route
> > Kernel IP routing table
> > Destination     Gateway         Genmask         Flags Iface
> > 10.0.0.2        *               255.255.255.255 UH    tun0
> > 213.214.236.80  *               255.255.255.240 U     eth0
> > 10.0.0.0        10.0.0.2        255.255.255.0   UG    tun0
>
>
> OK, looks like you are routing 10.0.0.0 to tunnel tun0 and (above) 10.0.0.2
>
> IIRC you observe (using tcpdump on tun0)  the packets arriving at the 
> server.
>
> I assume 213.214.236.80 is the network you want to route to?
>
> Would you mind to post the tcpdump output for tun0 and eth0 during the 
> tests
>
> cheers
>
> Erich

Hi!

Here is the dumps. The packets obviously comes thru the tunnel to the 
server. However, no answer is submitted back thru the tunnel to the client.

dns:~# tcpdump -i tun0
tcpdump: WARNING: arptype 65534 not supported by libpcap - falling back 
to cooked socket
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on tun0, link-type LINUX_SLL (Linux cooked), capture size 96 bytes
14:21:36.609795 IP 192.168.10.6 > www.sunet.se: icmp 40: echo request 
seq 14080
14:21:44.519248 IP 192.168.10.6 > www.sunet.se: icmp 40: echo request 
seq 14336
14:21:49.629102 IP 192.168.10.6 > www.sunet.se: icmp 40: echo request 
seq 14592

3 packets captured
3 packets received by filter
0 packets dropped by kernel
dns:~#

dns:~# tcpdump -i eth0 udp port 1194
14:20:13.571145 IP ns.soderlund.org.openvpn > 
the_client.gateway.outside.firewall.ipadress.48636: UDP, length: 53
14:20:13.591062 IP the_client.gateway.outside.firewall.ipadress.48636 > 
ns.soderlund.org.openvpn: UDP, length: 53
14:20:23.690858 IP ns.soderlund.org.openvpn > 
the_client.gateway.outside.firewall.ipadress.48636: UDP, length: 53
14:20:23.710342 IP the_client.gateway.outside.firewall.ipadress.48636 > 
ns.soderlund.org.openvpn: UDP, length: 53
14:20:29.550462 IP the_client.gateway.outside.firewall.ipadress.48636 > 
ns.soderlund.org.openvpn: UDP, length: 101
14:20:33.810295 IP ns.soderlund.org.openvpn > 
the_client.gateway.outside.firewall.ipadress.48636: UDP, length: 53
14:20:35.020621 IP the_client.gateway.outside.firewall.ipadress.48636 > 
ns.soderlund.org.openvpn: UDP, length: 101
14:20:35.462749 IP the_client.gateway.outside.firewall.ipadress.48636 > 
ns.soderlund.org.openvpn: UDP, length: 85
14:20:38.415047 IP the_client.gateway.outside.firewall.ipadress.48636 > 
ns.soderlund.org.openvpn: UDP, length: 85
14:20:40.026444 IP the_client.gateway.outside.firewall.ipadress.48636 > 
ns.soderlund.org.openvpn: UDP, length: 101
14:20:40.479712 IP the_client.gateway.outside.firewall.ipadress.48636 > 
ns.soderlund.org.openvpn: UDP, length: 85

135 packets captured
135 packets received by filter
0 packets dropped by kernel


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