Also, OSX's built-in VPN client works for many Cisco implementations, so works for a lot of people. Click here to search our knowledge base. © Bruin OnLine 7/22/2011: Cisco VPN Client compatibility with Mac OS 10.7/Lion The current version of the Cisco VPN Client does not appear to Any software firewalls configured on the box that might be doing something weird? Bernstein from Dayton, OH #181 | Sunday, April 11, 2010 9:03 AM Thanks! http://gmailpush.com/error-51/vpn-client-error-51-pc.html
Thanks. Apparently this can be a problem with any mac using a 64 bit kernel. Hinton from Indianapolis/IN/USA #62 | Thursday, March 20, 2008 8:54 AM Found this page while trying to search for solutions to error message addressed in this post. Anders from Cambridge, MA #240 | Friday, August 12, 2011 7:40 AM @Allen Can you post more of your system log right around the IKE FAILED message?
Unlike the Cisco website which made me register and then told me that I couldn't access the page that would explain the error messages. Any thoughts or ideas? Danielle from Cary NC #140 | Thursday, March 12, 2009 1:16 PM I have a Macbook Pro w/OS X 10.5.6. thanks!
Kristy from Chicago #188 | Thursday, June 10, 2010 9:07 AM Thanks for posting. Oct 22 Oct 22 - 21:30 11 Game Results - 2016-10-22 SAT Cüneyt, Lenia Ch. awesome eru from #88 | Saturday, June 28, 2008 4:12 AM sweetness! Unable To Communicate With The Vpn Subsystem Windows 8 Kibar from Toronto #168 | Thursday, November 12, 2009 2:55 PM Hi all, Great suggestions but I am running Leopard 10.5.8 and I tried to follow some of the suggestions mentioned
Thanks a lot, worked really well! The last time I ran it was after having headaches due to unexpected behavior in some application or other. Anders from Cambridge, MA #227 | Tuesday, May 10, 2011 7:06 AM Nick, What is the output of this command on your machine: (in Terminal) find /* -iname "*cisco*.kext" This will Apple Info Site Map Hot News RSS Feeds Contact Us Copyright © Apple Inc.
Anders from NY #155 | Wednesday, September 2, 2009 5:49 PM @Harry Ouch. Error 51 Credit Card I guess it just doesn't in this case. But I always forget and of course hadn't run it in some time - frankly in several months. Again, Thanks.
This is my first Mac and i've not had it long. http://www.domainwebcenter.com/?p=1268 Not sure what to do now. Error 51 Unable To Communicate With The Vpn Subsystem Windows 7 It does seem to happen more often if I’ve slept and woke the machine, or moved it from one defined location to another, but even then, it’s not predictable. Error 51 Cisco Vpn Windows 10 Secure VPN Connection terminated locally by the client.
I have full access to our internal network, web browsing etc. http://gmailpush.com/error-51/vpn-client-os-x-error-51.html Carl Spackler from Bushwood #97 | Monday, August 4, 2008 11:17 PM Thanks, that did the trick and got the client running again. I clicked on it, it installed and I now can use VPN! How Did I Miss This? Error 51 Unable To Communicate With The Vpn Subsystem Windows 10
yes , i am using Leopard.. 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 These were the instructions that I followed that resolved the error "In my case it happened if running the 64-bit kernel (see this Apple support article if you're not sure how http://gmailpush.com/error-51/vpn-client-error-51-xp.html I had another mac on the network with an older version of cisco's vpn client and even though it wasn't on, it seemed to interfere when starting this version.
In the console I get "Could not attach to driver. Error 51 Unable To Communicate With The Vpn Subsystem Windows 8 Anders from Cambridge, MA #198 | Monday, September 27, 2010 6:04 AM Sanya: Do they make a 64 bit binary? Please type your message and try again.
Anders from RTP #141 | Thursday, March 12, 2009 1:33 PM Danielle: I don't really have anything solid to suggest but make sure any kind of firewall or other networking package mpeg2tom from LA #57 | Saturday, February 23, 2008 2:50 PM Yep, it worked for Cisco 4.9.01 on OS X 10.5.2 MacBook Intel Michael from Horsham PA #58 | Tuesday, February This may have been the issue, I don't know. Cisco Vpn Error 56 Tim Chan from #102 | Sunday, August 31, 2008 10:32 PM thank you.
Mac OSX 10.6.3. 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. hywel from nh #84 | Monday, June 16, 2008 9:55 AM Worked perfectly!! this content Hope this helps some of the folks out there who weren't able to make this work using the solutions posted here.
Dan H from Portland, OR #159 | Thursday, October 15, 2009 11:11 AM I tried this: sudo kextunload /System/Library/Extensions/CiscoVPN.kext sudo kextload /System/Library/Extensions/CiscoVPN.kext The kernel extension unload command didn't work because it Speedwolf from UK #112 | Monday, October 6, 2008 1:47 PM Worked like a charm, cheers. Haven't tried it wireless yet, but I can at least login. Related: Networking Macs Mac Apps Business PCs Security OS X Shop Tech Products on Amazon You Might Like recommended for you Securing your iPhone 2.0 Read more » Subscribe to the
Thanks a lot! The VPN driver only has i386 and PPC extensions, not x86_64 extensions. Now, I see a successful connect, authentication and IP address, even the banner message, but almost immediately after that, the VPN disconnects! Thanks Anders from Cambridge, MA #220 | Thursday, April 7, 2011 5:24 AM There is a good chance you have a 64 bit machine.
Moguul from Regensburg, Germany #160 | Monday, October 19, 2009 1:38 PM Thanks Dan, works great with my Version and Snow Leopard. ;-) Dave T from NYC, NY, USA #161 | Tyler from #229 | Friday, June 24, 2011 7:56 AM We've noticed on the SandyBridge macs (the ones with Thunderbolt) even the newest VPN client wont start -- just gives the Restarting my computer is not something I want to spend my time doing, since I usually put my computer to sleep. It worked!
This does not cover the "Error 51" issue from this page but did cause the Cisco VPN software not to connect. If you need to connect to a client VPN from work, and you are using Windows PPTP (build-in VPN), you need to open TCP port 1723 on your local or corporate error 51: bla bla fixed it with: sudo ifconfig fw0 down (password required) but this only works until restart then i get the same error until i do it again. I can connect to my vpn ok, but then I lose access to the internet.
Eduardo P.J. I selected those two VPN lines and clicked on Approve button. You might need to add them to your application list. VPN over dialup still doesn't work me. If you are having this issue, try running Software Update and make sure you have the latest release and see if that helps.
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