Help: vpnc from VirtualBox Linux guest

Thread View: aus.computers.linux

3 messages

[T] Back to Threads [V] Tree View [G] Group Articles

3 total messages Started by James C Sat, 21 Mar 2009 06:36

#776

Author: James C
Date: Sat, 21 Mar 2009 06:36

20 lines
2084 bytes

I had vpnc working on Ubuntu 7.10 on a physical PC, but I stopped using 
that physical PC a couple of months ago.

I copied my working vpnc config file to Ubuntu 8.10 running in a 
VirtualBox guest with NAT networking, running VirtualBox 2.1.4 on a 
Windows Vista Ultimate host.  I can start vpnc on Ubuntu either from the 
command line or through Network Manager.  The vpnc process on Ubuntu 
connects, but then ssh connections from Ubuntu timeout trying to connect 
to servers on the VPN ("ssh -v" just says eventually "connection timed 
out").

If I run the Cisco VPN client on Vista, I can ssh into the VPN from 
Vista or the Ubuntu guest (in other words, it works).

I'm not a networking expert, but I don't see any reason why running vpnc 
on the guest OS wouldn't just work.

I also used Firestarter to switch off the firewall on Ubuntu.

Any suggestions?  Is it something to do with ICMP?

Re: Help: vpnc from VirtualBox Linux guest

#777

Author: Zebee Johnstone
Date: Sat, 21 Mar 2009 20:02

29 lines
2132 bytes

In aus.computers.linux on Sat, 21 Mar 2009 06:36:11 GMT
James C <enough.already@no.more.spam.please> wrote:
>
> I copied my working vpnc config file to Ubuntu 8.10 running in a 
> VirtualBox guest with NAT networking, running VirtualBox 2.1.4 on a 
> Windows Vista Ultimate host.  I can start vpnc on Ubuntu either from the 
> command line or through Network Manager.  The vpnc process on Ubuntu 
> connects, but then ssh connections from Ubuntu timeout trying to connect 
> to servers on the VPN ("ssh -v" just says eventually "connection timed 
> out").
>

In these sorts of situations, I haul out the packet sniffer.

So fire up wireshark on your guest, and on the host it is running on.

If you have access to the host you are ssh'ing to, run it on that too.

Try to connect and examine the packet flow.

Follow the packets out, follow the responses back.  It is probable
that somehow response packets are not coming back, perhaps something
to do with the routing on the host.

Even though your working setup isn't quite the same thing, run the
sniffer on that first so you have some idea of what it should look
like.

Zebee

Re: Help: vpnc from VirtualBox Linux guest

#778

Author: James C
Date: Sun, 22 Mar 2009 09:14

22 lines
2311 bytes

On 22/03/2009 7:02 AM, Zebee Johnstone wrote:
> In aus.computers.linux on Sat, 21 Mar 2009 06:36:11 GMT
> James C <enough.already@no.more.spam.please> wrote:
>> I copied my working vpnc config file to Ubuntu 8.10 running in a 
>> VirtualBox guest with NAT networking, running VirtualBox 2.1.4 on a 
>> Windows Vista Ultimate host.  I can start vpnc on Ubuntu either from the 
>> command line or through Network Manager.  The vpnc process on Ubuntu 
>> connects, but then ssh connections from Ubuntu timeout trying to connect 
>> to servers on the VPN ("ssh -v" just says eventually "connection timed 
>> out").
> 
> In these sorts of situations, I haul out the packet sniffer.

I had a bit of time this weekend, and read a networking book and had an 
"aha-moment" with VirtualBox Host Interface Networking... to cut a long 
story short, I have vpnc working now.  I didn't need wireshark in the end.

Next problem:

The Windows host is sharing folders and a printer.  I can see the shared 
folders on the Ubuntu guest, but I still can't add the shared printer 
(using system-config-printer)....  Anyone?

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads