[vpn-help] negotiantion timeout occured on Win7 64Bit (August 2012)

Kevin VPN kvpn at live.com
Sat Aug 18 12:48:15 CDT 2012


On 08/16/2012 05:33 AM, bestellungen at thielheim.com wrote:
>
>
> Hi Kevin,
>
> thank you for your respond. And the answer is no: No
> packets are reaching the gateway. So currently i guess, that the "Shrew
> virtuel Adapter" is the reason bacause it get's not enabled while i try
> to establish the connection. I cannot see any error messages. The Win7
> machine - SP1 with all patches - is standalone / no domain and it's an
> out of the box installation - no other software on it.
>
> Regards,
>
>
> David
>
> On Wed, 15 Aug 2012 22:31:03 -0400, Kevin VPN wrote:
>
>> On
> 08/03/2012 10:11 AM, Bestellungen wrote:
>>
>>> Hi all, have the same
> connecting problem as it was posted earlier in this mailing list: Win7
> 64Bit SP1 client (German) with Shrew VPN Client 2.1.7 (and 2.2.0 beta,
> separetly tested). Trying to connect brings me to the "negotiation
> timeout accoured" message. Checked the adapter settings (Filter) with
> all tried media (Mobile Phone, WiFi, Ethernet/cable) Using WinXP / SP3
> (german) everything is working as exprected with every media (mobile,
> WiFi...) Using a LANCON 1722 VPN Gateway with the lates Firmware (LC.OS)
> Attached you'll find an IKE trace log. Any help would be highly
> appreciated!
>>
>> Hi David,
>>
>> The "resend 1 phase1 packet(s) [0/2]
> 172.20.10.5:500 -> xx.xx.xx.xx:500"
>> messages in the trace log suggest
> that either the packets are not
>> getting to the gateway or the gateway
> is ignoring the connection request.
>>
>> I would first check the VPN
> gateway logs to see if it even sees the
>> traffic from the Win7
> machine.
>>
>> Do you have any other VPN software installed on the Win7
> machine? Is it
>> part of an Active Directory Domain?
>>
>>

Hi David,

My understanding is that the Shrew Soft Virtual Adapter does not get 
enabled until the negotiation has at least partially progressed with the 
VPN gateway.  Based on the trace log you sent and your comment about no 
packets reaching the gateway, negotiation does not even start in your case.

I have a few questions for you:

1. Is the Win7 machine a laptop?  Does it have the Microsoft Virtual 
WiFi Miniport adapter enabled?  If so, uninstall Shrew, disable the 
Virtual WiFi adapter, reboot, then install Shrew again.

2. The Windows XP machine that works, is it on the same network as the 
Windows 7 machine?  Are they behind a NAT so that VPN gateway sees them 
coming from the same IP address?  If so, can you try disconnecting the 
other Shrew clients, wait 15 minutes, then try the Win7 machine?

3. Do you know how to use Wireshark to do a packet capture?  If so, can 
you do a capture to see if there's packets coming from the Win7 machine 
going to the gateway?




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