Comments on: Leopard 10.5.1 Update Breaks Cisco VPN, with Fix

By: Personal vpn

Personal vpn — Sat, 25 Apr 2009 14:45:16 +0000

Yes, the fix worked

By: Brian White

Brian White — Thu, 29 Jan 2009 18:03:32 +0000

Glad to hear that many here have cleared up their Cisco VPN Client running on Leopard issues. I’m still unsuccessful at accessing shares behind the PIX 506e firewall with a Dual PowerPC running 10.5.6. I’ve got both a Windows XP machine and the Mac set up running VPN client versions 5.0.04.0300 and 4.9.01.0100, respectively. Both logs on the clients are clean and both are connecting. From there, the Windows system is reaching shares just fine. The Mac system is not. I can’t see anything in the Network list and Command-K doesn’t work either (“Connection Failed”). I turned off split-tunneling on the PIX to ensure that wasn’t complicating things further. Even testing with the demo version of VPN Tracker I can establish the tunnel, but then can’t see the network, which is comprised of several Macs, a WS03 server and about 12 PC workstations all on a single domain. This must be DNS related or something. If anyone has any ideas I’d really appreciate hearing them. Thanks!!

By: Vedran Vrbanc

Vedran Vrbanc — Wed, 17 Dec 2008 17:15:28 +0000

Just to let everyone know, I had the same error after upgrading 10.5.5 to 10.5.6.

The fix descibed above worked for me.

By: Andre

Andre — Sun, 02 Nov 2008 07:53:42 +0000

I tried all this and I still got the ugly “Error: 51″ window.

What finally helped for me:
1) Restart the machine
2) Install the mentioned above Cisco update

:-)

Thank you all for the very valuable hints!

By: Nate Koechley

Nate Koechley — Fri, 10 Oct 2008 20:05:06 +0000

I get that error frequently, too. But, as I cited above, typing the following into Terminal always clears it right up for me:

sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart

By: personal vpn

personal vpn — Thu, 02 Oct 2008 14:28:22 +0000

I get error 51: Unable to connect to VPN subsystem when trying to run the VPNClient.app in Applications. What’s worng ?

By: Franziska

Franziska — Sun, 06 Jul 2008 10:15:51 +0000

Hi!

I got a brand new MacBook / Leopard 10.5.4 with pre-installed X11. The first problems occurred while trying to make a screenshot with Gimp. I realised that Gimp requires Quartz / X11 update 2.2.3 which I downloaded. Now, Gimp offers and executes the screenshot function and opens a new window with the shot – yet, the shot is all black.

Second, cisco vpn (4.9.01) suddenly refuses to start up. It worked until I had the X11 upgrade installed. As vpn doesn’t run on X11 do I not know what the problem might be.

Is there anybody who could help me?

Thanx, cheers Franziska

By: cbare

cbare — Fri, 23 May 2008 03:01:53 +0000

Isn’t it great that Cisco makes it hard for legitimate customers to download the vpn client? So people end up getting their security software from insecure sites. Brilliant strategy Cisco. Thanks a lot!

By: Scott Mckenzie

Scott Mckenzie — Sun, 27 Apr 2008 11:50:53 +0000

Great, worked like a charm for me also…. beats using OWA to get mail when out and about!

Thanks

By: Piyush Srivastava

Piyush Srivastava — Mon, 17 Mar 2008 23:12:38 +0000

Well, …almost all what you could think of has been covered above. I tried most of the stuff, but apparently it was failing for me. Reason being, some relevant files were missing from the Library. Here are my 2 cents on this:

Initially i had Tiger OS and Cisco VPN installed. All worked well. I upgraded to Leopard using clean install option and everything worked fine still, …after re-installing my Cisco VPN client.

Until one day, my Mac crashed on me. I re-installed the ‘Leopard’ OS using “Archive and Install
” option. The system was back up and running as before, until, …I realized that my Cisco VPN client would error out and popped an “Error: 51″ window.

I browsed through couple of forums and finally made it to work. This is how i got it to run:

Using the ‘Archive and Install” all my files and user settings etc. were recovered. However, neither the “CiscoVPN” folder got created under /System/Library/StartUpItems/ – like earlier. Nor the “CiscoVPN.kext” file was found under /System/Library/Extensions. And these are where the VPNClient executables are located.

Re-installing the CiscoVPN overwrites files to the same location, …if chosen as earlier. Once you have re-installed, you have all your files with correct permissions. And, ready to connect.