Not sure why. Haven't tried it wireless yet, but I can at least login. did a command line restart of the vpn client 3. Cacasodo from #7 | Saturday, May 12, 2007 9:30 PM Didn't work for me unfortunately, using a wired or wireless connection.
I had to "dump the Cisco program and reinstall, only to have the error reappear two days later. Anders from RTP #23 | Wednesday, November 7, 2007 7:05 AM John / Pascal: I am hearing reports that OS X 10.5 Leopard is working with Cisco VPN 4.9.01 if you Kurli from US #177 | Tuesday, March 30, 2010 8:28 AM You just saved my sanity! It should be in /Library/StartupItems. https://discussions.apple.com/thread/3195725?start=0&tstart=0
I tried several things mentioned above but not the solution which apparently helped many of you using Leopard - both my machines are running Tiger. Pascal Drew from France #22 | Wednesday, November 7, 2007 5:03 AM I have also just upgraded to Leopard 10.5 and it has started happening to me too, tried earlier ideas Afshin Attarzadeh from Hall/BW/Germany #193 | Thursday, August 12, 2010 9:33 AM Thank you so much. very useful.
Does anybody know how to solve it? I reinstalled (I have an old bundle, 0030) and it works fine now. In Terminal, type: cat /etc/resolv.conf and check the nameserver lines against what your tech department considers "internal DNS servers". Anders from Cambridge, MA #178 | Tuesday, March 30, 2010 9:01 AM @Adam: Seems like you might be pointed to the wrong DNS server.
That's all what I can to do for today. 230 build is not supports 64bit mode. ( 2) Error message stays the same - 51 error code. 3) Way of crashing Apple Info Site Map Hot News RSS Feeds Contact Us Copyright © Apple Inc. Joe from Mpls, MN #24 | Friday, November 9, 2007 9:49 AM Thanks Steve from VA #25 | Friday, November 9, 2007 7:43 PM Thanks, saved me some headaches here. https://coolestguidesontheplanet.com/cisco-error-51-unable-communicate-vpn-subsystem/ yesterday downloaded Lion (10.7) and when I tried to open Cisco VPN Client gave me the bloody error 51.
Stopped working after I upgraded from 10.5 to 10.6. CJ from maryland #206 | Monday, December 6, 2010 9:02 PM I'm receiving the VPN error 51 but i am using a PC not a Mac. This worked beautifully, I am now booted into the 64-bit kernel and VPN-ing without Cisco's klugey code. I can connect to my vpn ok, but then I lose access to the internet.
Is it not working?RegardsPhilipp See More 1 2 3 4 5 Overall Rating: 0 (0 ratings) Log in or register to post comments aljosaocepek Sat, 07/23/2011 - 09:39 Hi,I tried anything https://supportforums.cisco.com/discussion/11245456/mac-os-x-lion-and-error-51-help-needed-asap-please Does anyone have instructions on how to use Mac's embedded VPN to talk with a site that uses Cisco VPN and SecureID tokens? Again, Thanks. http://www.shimoapp.com/ (If you need cisco-vpn-profiles, you have to install cisco-vpn-client first, otherwise it won't run!) Jay from Around the world #147 | Wednesday, April 22, 2009 3:02 AM Just adding my
See More 1 2 3 4 5 Overall Rating: 0 (0 ratings) Log in or register to post comments Craig Lorentzen Mon, 03/26/2012 - 07:54 Hello Robert,In Windows 7 you would Anders from RTP #6 | Tuesday, May 8, 2007 9:50 AM Yep, a friend of mine pointed that out and I have since confirmed it. Brian from Dearborn/MI/usa #117 | Sunday, October 12, 2008 7:57 PM I used the fix at the top and it worked great. There are three things to know: 1.) You need to ENABLE Internet Sharing to uncheck the ports.
So this is an automated process...Or have you configured any special UDP Port on the VPN Gateway?Anyway, have you tried to establish a VPN connection? thanks! and it started working again. Access terminal and execute: $ ifconfig -a Enter password if prompted.
I get this error all the time and this fix always works for me. Connections would be attempted and a password was requested but after submitting, the connection would never be established and eventually the Cisco VPN app would time out and go back to Thank you!
Open Menu Close Menu Apple Shopping Bag Apple Mac iPad iPhone Watch TV Music Support Search apple.com Shopping Bag : CommunitiesContact SupportSign inContentPeopleSearch Support CommunitiesMac OS & System SoftwareMac OS X Danielle from Cary NC #140 | Thursday, March 12, 2009 1:16 PM I have a Macbook Pro w/OS X 10.5.6. From system preferences, I created a new user and named it 'nobody' and vpn started working again. As my preference is to use the VPN on my G5, I searched briefly and found this page (thank you all!).
There is a possibility to auth with the certificate, but I guess it's a different method.Is there any alternative client which supports AuthType=3 authentication? Thanks! Chuck Burt from Boston Area, MA, USA #108 | Thursday, September 18, 2008 12:13 PM I just wanted to point out that I come back and refer to this article time Worked great.
Hmmm... Richard from Santa Barbara's sudo line solved all my error 51 problems. Allen from South Africa #239 | Friday, August 12, 2011 7:04 AM Hi, Thanks for the info on http://anders.com/guides/native-cisco-vpn-on-mac-os-x/ I have now switched to native, since the Cisco client never worked It makes one ask, why couldn't Cisco have just put the restart into their client?
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