Cisco Vpn Mac Error 51 10.7
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7 CommentsCisco Error 51: Unable to communicate with the VPN subsystem on Mac OS Xcisco-osx-error-51-vpn-subsystemThis is a nice little frustrating error message that displays on launch of the Cisco VPN client application for OS X in either 10.7 or 10.6.There are a couple of solutions to be found online, the first one is restart the VPN service via the command line. So in the Terminal run the following command:sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restartThis has fixed the issue for some users but not everyone, some users actually don't have the file in their Start https://supportforums.cisco.com/document/18796/cisco-ipsec-vpn-client-mac-os-x-generates-error-error-51-unable-communicate-vpn Up items and the problem was that the system extension for the VPN service wasn't actually loaded in the first place so it couldn't be restarted.If this is the case load the extension with the following command and then all should work fine:sudo kextload /System/Library/Extensions/CiscoVPN.kextI have tested in 10.6.2 and works fine. As good practice make sure you have the https://coolestguidesontheplanet.com/cisco-error-51-unable-communicate-vpn-subsystem/ latest version which is build 4.9.01, you can download these here. But Cisco have made it very difficult to just download their software, you need to create a login id and also get a service contract and then link that service to the login id - if you have these things you'll be good to go, otherwise a royal pain. Take the easy route….Connect via OS X Network InterfaceBut there is a much better way, if you have Snow Leopard 10.6 or Lion 10.7 you don't need to use the Cisco client, OS X provides a Cisco VPN client built into the operating system.Configure the client by going to the System Preferences > Network > Click on the "+" sign below the list of interfaces, select VPN from the interface list and Cisco IPSec from the VPN type, click create and enter your settings and your good to go.cisco-ipsec-osxShare this:TwitterGoogleFacebookRelatedCats: macOS, Random, Tech Tags: Cisco, Error 51, mac, OSX, Subsystem, VPN Russell Thank you! After trying so many options without success, I found your article! I didn't even realis
A fix for 'Error 51' with the Cisco VPN Client Sep 02, '08 07:30:03AM • Contributed by: robg To connect to Macworld's servers, I use the Cisco VPN Client (version 4.9.01). While this works well most of the time, I occasionally receive this error message when I launch the http://hints.macworld.com/article.php?story=20080902050428729 app: Error 51: Unable to communicate with the VPN subsystem. Please make sure that you have at https://www.bol.ucla.edu/alert/20110722.html least one network interface that is currently active and has an IP address and start this application again. When this occurs, I definitely have an active network interface that has an IP address, so it's quite clearly not an issue with my machine's settings. The problem seems to be related to sleeping the Mac after using the Cisco VPN Client; this sometimes (but not always) will lead to cisco vpn the above error message when I next try to use the VPN Client. What makes it extra frustrating is that it's not consistent -- the app will work for days at a time through sleep and wake cycles, then spontaneously decide it's time for error 51 to appear. I used to think rebooting was the only way to solve this problem -- I hadn't had much luck with the solutions posted in this older hint. A while back, after getting "51'd" again, I went cisco vpn mac in search of a better solution -- and I found one. In Terminal, use this relatively simple command to stop and restart the kernel extension that the Cisco VPN Client uses: sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart In the two or three times I've had this problem occur since finding the above solution, restarting the kernel extension has fixed the problem every time. So thanks to Anders.com for solving this frustrating issue with the Cisco VPN Client. I would hope a future Cisco VPN Client update would solve the issue entirely, but that fix has been published for two years already, so I'm not holding my breath. • Currently 3.75 / 5 You rated: 2 / 5 (8 votes cast) [62,108 views] Hint Options Printable Hint Format Subscribe to 'macosxhints.com application tips' A fix for 'Error 51' with the Cisco VPN Client | 15 comments | Create New Account Newest First Oldest First Flat Nested No Comments Threaded Click here to return to the 'A fix for 'Error 51' with the Cisco VPN Client' hint The following comments are owned by whoever posted them. This site is not responsible for what they say. A fix for 'Error 51' with the Cisco VPN Client Authored by: fltman on Sep 02, '08 08:16:41AM A cleaner way of doing it is like this: sudo SystemStarter restart CiscoVPN And if it is a common problem why not make an alias out of it? Add the following line to your .bash_profile alias resetcisco='sudo SystemStarter restart CiscoVPN' [
on 6/30 News archive rss BOL Webmail Have a question? 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 run properly if Mac OS is running the 64-bit kernel. Mac OS 10.7/Lion runs the 64-bit kernel by default. Users will see the error "Error 51: Unable to communicate with the VPN subsystem" when starting the VPN. Until Cisco releases a compatible client, there are a few workarounds available: Set Mac OS X to boot using the 32-bit kernel according to the instructions in Apple's support article Configure the Mac OS X built-in VPN client to connect to the UCLA VPN using any one of the following protocols: PPTP Cisco IPSEC Please note that this issue is not specific to Mac OS 10.7/Lion. Apple has a list of Macs that use the 64-bit kernel by default as well as instructions to find out if you're using 64-bit mode. If you have any questions, please contact the BOL Help Desk at (310)267-4357 or at consult@ucla.edu. UCLA Home | UCLA Directory | URSA | MyUCLA | Library | BruinCard | Sitemap Last Updated Fri Jul 22 12:46:58 PDT 2011 'tk' consult@ucla.edu