[T400] Cisco VPN client not working over wireless adapter (but works on cabled connection)

[wreck1080]

I have a very strange problem. 

I need to connect to my work via the cisco vpn client (version 5.0.00.0340). 

My previous laptop (T43 , windows XP) worked well through both wired / wireless connections.  My desktop machine (vista) works via wired connection (it has no wireless connection). 

On my new T400, the VPN client works via a wired connection but not via the wireless adapter.  

On the wireless apapter, the vpn seems to connect OK, but when I try to access resources via the VPN there is little response.

I get this in the vpn log...

405   08:56:57.073  04/16/09  Sev=Warning/2 IPSEC/0xE3700003

Function CniInjectSend() failed with an error code of 0xa4510009 (IPSecDrvCB:846)

 I've tried disabling the firewall (in both the T400 and the router), removed access connections, and disabling tcp v6. I've rebooted everything too. 

But, nothing seems to work.   I suspect the problem is on the t400 somewhere, because the old laptop used to work OK via wireless.

I've seen some google links on cisco vpn not working via  wireless but nothing seems to apply to my exact situation yet. 

Anyone else had this problem or know of a fix? Thanks in advance. 

[wreck1080 · Accepted solution]

all good now, got it working. 

The Deterministic network thing was not installed on the wireless adapter for some reason.

So, I installed the latest wireless driver, reinstalled the vpn and all is good now.  

[cajackson]

Thanks for posting this.  I had the same problem with my Dell Latitude and the Cisco VPN Dialer.... I had turned off the Deterministic Network Enhancer under the wireless adapter trying to troubleshoot something else.  Nice to have Google to help "remember" things like this.

[konreddy]

I dont know I still have this problem?

I my Wireless Network connections i could not see any Network deterministic enhancer. Can some one tell me how to install this onto my wireless network adapter?

[fmyhr]

Hi all,

If you are having trouble with VPN and wireless networking, it would be very helpful for you to post *which* wireless card is installed in your ThinkPad. The 7-digit model/type number found on the label on the bottom and in the main BIOS setup screen (press F1 at boot) is usually sufficient to figure this out (unless it ends in "-CTO").

If your wireless card is the Intel 5300 with PAN, then others have reported a work-around. A true fix may require a software update from Cisco.

Best regards,

Frank

[gan Guru]

It would also be useful to know what version of the VPN client and what kind of OS and SP level. The VPN client version 5.0.00.0340 from the first post in this thread is pretty old and not even available for download from Cisco anymore. Unless i remember wrong that version also contains beta code for Windows Vista so not a recommended version to use especially if using Vista.

[TZR]

I'm having the exact same issue as the OP. Connects but no traffic over wireless, everything works fine from LAN. I even ave another win7x64 newer computer in the house which connects wirelessly no problem.

<<Problem Machine>>

Model: T510

Nic: Intel Wifi Link 1000 BGN  

VPN: 5.0.07.0290

I've checked that DNE is installed and ran through the instructions below for a similar problem but on a different NIC. Nothing seems to work. 

http://www.wfu.edu/~yipcw/lenovo/t400/intel-5100-vpn/ 

Any help would be so appreciated!

Thank you