L2TP VPN and Vista

[vcandy]

Hi.

Was wondering if anyone could help me understand why my L2TP VPN with certificate encryption connects perfectly when using my wireless adapter on my vista business laptop (client), when connecting to XP pro (server), but it will NOT work when I use the plug in ethernet card. When trying to use my wired lan card on same laptop I receive 809 error?

Equipment:
Client L2TP VPN - Vista Business w/ SP2
Server L2TP VPN - XP Pro w/ SP3
Certificate encryption

Issue:
Wireless on Client Connects.
Wired on Client Does NOT. (SAME MACHINE)

Thanks for your help in advance...

 

[cmeagan656]

Are your wireless adapter and wired LAN going through the same router and/or firewall? If not, is the router and/or firewall for your wired LAN configured to allow VPN traffic?

809
The network connection between your computer and the VPN server could not be established because the remote server is not responding. This could be because one of the network devices (e.g., firewalls, NAT, routers, etc.) between your computer and the remote server is not configured to allow VPN connections. Please contact your Administrator or your service provider to determine which device may be causing the problem.

Source:

http://support.microsoft.com/kb/923944

Hope this helps.

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[vcandy]

cmeagan656 - appreciate the response and help.

Yes they are going through the same router. I had an opportunity to test this on 4 different routers (3 of them being linksys and 1 being, I believe an 8000 series cisco)all, interestingly enough, produced the same results. I find it quite strange.

I have tried a lot of different things. The only thing I can think that I have not explored fully are the certificates and the licensing. I used "Simple Authority" to produce my certificates. Frankly I am just not knowledgeable enough in this area to know if this may perhaps be the problem?

Thanks for your time...

 

[vcandy]

L2TP VPN Wireless works / Wired does not - solved.

After weeks of various tests, configuration changes, and of course headaches, I found simply updating to Intel latest LAN driver solved this problem. The original driver was date '07 and the new driver was '10.