Home > Error 51 > Error 51 Unable To Communicate With The Vpn Subsystem Lion

Error 51 Unable To Communicate With The Vpn Subsystem Lion

Contents

Thanks! Does anybody know how to solve it? Thanks a lot, worked really well! The second command loaded it and then it worked. Source

Am I missing something? Thanks. Hmmm... Is it bad to port forward port 443 for ssh?

Error 51 Unable To Communicate With The Vpn Subsystem Windows 7

Even if Cisco's VPN client were essentially a shell script which unloads then reloads the ktext and then starts the client, that would be better. Thanks a lot! Start the VPN service .. If you're in the same boat, you can open the PCF in textedit and copy the group name and password.

  • Then execute: $ sudo ifconfig fw0 down You may have to execute the command twice.
  • macos lion vpn share|improve this question edited Jul 20 '11 at 16:23 Nathan Greenstein 18.4k1976119 asked Jul 20 '11 at 16:14 carl Oneil 76113 Does Cisco say their app
  • 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.
  • Thanks!

Steve from Minneapolis #4 | Friday, May 4, 2007 5:30 PM Nice - works to correct the same issue when running Windows on a Mac (restart the Cisco VPN Service). if Apple allowed more control and not be so tight ass and then justify it by saying they are making a stable OS (which is BS, guest account disaster on 10.6??), 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. Cisco Vpn Error 51 Unable To Communicate With The Vpn Subsystem Tried some of the solutions suggested here, but it didn't work out.

Also, it would seem that Cisco is unable to respect conventions of not putting startup items /System/Library/StartupItems. Cisco Vpn Client Error 51 Windows 8 You might have a newer version partially installed over an older one. You can pull down the 4.9.01 build from MacUpdate.com cheers Ben from CA #42 | Friday, December 21, 2007 3:23 PM Thank You! https://supportforums.cisco.com/document/18796/cisco-ipsec-vpn-client-mac-os-x-generates-error-error-51-unable-communicate-vpn twhittle1 2 months 4 weeks ago 128 views Blog C-Series // Resolve Service Profile Association Failure When Incorrect Server Info Given Tray Stoutmeyer 3 months 2 weeks ago 70 views Discussion

Hope it helps. Error 51 Unable To Communicate With The Vpn Subsystem Windows 10 Susi from Jena, Germany #190 | Tuesday, July 13, 2010 7:34 AM Thanks for sharing. Still not working. up vote 14 down vote favorite 6 Worked in Snow Leopard and now gives error 51 and the sudo restart system command in Terminal i used to use doesn't work.

Cisco Vpn Client Error 51 Windows 8

greg from wellington NZ #12 | Tuesday, June 26, 2007 1:49 AM i'm working in wellington unforturneatly this hasn't worked anymore ideas Anders from RTP #13 | Tuesday, June 26, 2007 I was so tired about Cisco VPN disconnecting. Error 51 Unable To Communicate With The Vpn Subsystem Windows 7 Please let me know, if anything new is found out...thanks a lot!!! Unable To Communicate With The Vpn Subsystem Windows 8 http://anders.com/guides/native-cisco-vpn-on-mac-os-x/ Cary from Indianapolis, IN #236 | Monday, July 25, 2011 3:59 PM My Cisco VPN broke under Lion.

Can morse code be called steganography? Thanks man. George Coller from Austin, TX #26 | Friday, November 16, 2007 1:39 PM Cool, glad I found this! both builds 90 and 80.. Error 51 Cisco Vpn Windows 10

I've thankfully not had any of the problems noted in this blog post. My problem is while VPN works fine with my wired and wireless (802.11g) networks it won't connect when I use a dialup connection. I tried the sudo command several times and every time the output says that the command could not be found. have a peek 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

Apple's new security update kills CiscoVPN when using dialup adapters. Error 51 Credit Card Thank you and thank you google. Post navigation Previous Previous post: PHP Switch Statement - output result from selected optionNext Next post: Mac Terminal Loading Slow Search for: Search Recent Posts Secure your website using Let’s Encrypt

Kurli from US #177 | Tuesday, March 30, 2010 8:28 AM You just saved my sanity!

Then restart CiscoVPN as above, and it may work. On SL-64 bit kernel, I used the Apple VPN to connect. I'm currently using OSX's VPN to a Cisco ASA 5510 with SecureID authentication. Error 51 Unable To Communicate With The Vpn Subsystem Windows 8 However, I did find that simply loading the kernel extension seemed to work fine: "sudo kextload /System/Library/Extensions/CiscoVPN.kext" Then I was able to run VPNClient with no problems.

Lantao Liu from US #123 | Sunday, November 2, 2008 10:49 AM can anybody describe the reason of this problem? Also, OSX's built-in VPN client works for many Cisco implementations, so works for a lot of people. This method will work on 10.7 until Cisco actually creates a 64 bit extension for mac os x. Check This Out This does not cover the "Error 51" issue from this page but did cause the Cisco VPN software not to connect.

Even better! 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. Found this right away and it worked immediately. Thanks for the tip!

I would be very glad, if someone has suggestions what to do. In it was the FULL version of CiscoVPNClient circa Nov. 2007. Or a better idea would be to not reinvent the wheel and use the existing IPSec VPN support in OSX! 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

Alfonso Mateos from Madrid / Spain / Europe #51 | Friday, February 1, 2008 3:38 PM Thanks a lot, that sudo command worked for me :-) Anyway, I'm surprised that in I'm so glad I found this solution so quickly! MacUser from Germany #203 | Tuesday, November 9, 2010 3:23 AM Hello, since I had to warmstart my system when I was working with the admin account, my VPN Client (Cisco) I had to turn off the program's firewall and then run my fix posted above.

Jim Reardon from Madison, WI #47 | Monday, January 21, 2008 9:49 PM Have been getting "Error 51" since upgrading to 10.4. thank you so much. http://mac.softpedia.com/progDownload/Cisco-VPN-Client-Download-12633.html Jack M. Nathan Rambeck from Xenia, Ohio #218 | Wednesday, March 16, 2011 6:54 AM Thanks, worked perfectly.

nick from Australia #219 | Thursday, April 7, 2011 5:17 AM I tried following the instructions and inside Terminal i get the error /System/Library/Extensions/CiscoVPN.kext failed to load - (libkern/kext) requested architecture/executable Pamelarashid i tried both and it is still not working.  I have the .pcf file that i get from my work but getting this error again and again.  I also tried I went to terminal and ran this command > /usr/local/bin/vpnclient stat This told me that 'nobody' user is missing. i hated having to reboot just because of this stupid error.

p.s. I tried typing sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart into Terminal. Nabha from California #189 | Friday, July 9, 2010 10:50 AM Holy smokes, thanks for sharing this; it worked perfectly. Don't ask me how it got unloaded..