Cisco Vpn Client Error 51 Mac
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Comments By Rob Griffiths, Macworld Oct 17, 2008 12:57 PM One of the most-used programs on my Mac is the Cisco VPN Client, which is what I use to connect to Macworld’s
Cisco Vpn Client Mac Error 51 Unable Communicate Vpn Subsystem
VPN when posting articles such as this one. (OS X’s built-in VPN client also works, but it also logs me out of and then back into iChat every time I connect or disconnect from the VPN. The Cisco VPN Client doesn’t have this annoying problem, so I use it instead.) While the Cisco VPN Client works well most of the time, sometimes when I try to cisco vpn client osx launch the application, I’m greeted with this error message in place of the usual connection dialog: Error 51: Unable to communicate with the VPN subsystem. Please make sure that you have at least one network interface that is currently active and has an IP address and start this application again. The error is clearly incorrect, because my machine’s networking capabilities are otherwise fine—I can browse the net, send and receive e-mail, and connect to other machines in the house. I don’t get the error message all the time, and I don’t really know what causes it. 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. All I know for sure is that it’s annoying, because (until recently) the only fix I was aware of was to reboot the machine. One day, after probably the second or third time I’d restarted my machine, I decided there must be a better solution, so I went digging to see if anyone else had already found one—and they had. As detailed on the linked site, the solution is a relativel
in Mac OS X instead of the CiscoVPN software. Here's a guide that tells you how to convert from CiscoVPN
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to the native OS X client. If you are running Cisco's VPNClient cisco vpn client ubuntu on Mac OSX, you might be familiar with (or tormented by) "Error 51: Unable to communicate with cisco vpn client windows 64 bit the VPN subsystem". The simple fix is to quit VPNClient, open a Terminal window, (Applications -> Utilities -> Terminal) and type one of the following: (for older versions) sudo http://www.macworld.com/article/1136208/ciscovpn.html /System/Library/StartupItems/CiscoVPN/CiscoVPN restart (for newer versions) sudo kextload /System/Library/Extensions/CiscoVPN.kext and give your password when it asks. This will stop and start the "VPN Subsystem", or in other words restart the CiscoVPN.kext extension. Cisco seems to have problems when network adapters disappear and reappear, something that happens commonly in Wireless or Dial-up scenerios. Sometimes putting a system to sleep, disconnecting http://www.anders.com/cms/192/CiscoVPN/Error.51:.Unable.to.communicate.with.the.VPN.subsystem an Ethernet cable or simply reconnecting your wireless will cause CiscoVPN to loose track of the network adapters on the system. Considering that CiscoVPN is typically used by telecommuters, this is an astonishing oversight on Cisco's part. The above hack should side-step all of these issues by causing the CiscoVPN to re-initialize. It makes one ask, why couldn't Cisco have just put the restart into their client? Or a better idea would be to not reinvent the wheel and use the existing IPSec VPN support in OSX! Am I missing something? EDIT: The MacWorld guys came up with a simpler way to do the same thing: sudo SystemStarter restart CiscoVPN Posted by Anders Brownworth Monday, November 13, 2006 7:25 PM Tweet Comments (269) Jeff from Chicago #1 | Friday, March 23, 2007 6:53 AM Thanks for the tip - this worked like a charm. todd from boston #2 | Thursday, March 29, 2007 10:29 AM you the man - thanks! Tony from Carmel from Carmel #3 | Friday, March 30, 2007 6:49 P
VPN Service has not been started. Please start this service and try again. Secure VPN Connection terminated locally by the client. Reason 403: Unable to contact the security gateway. Secure VPN Connection http://helpdesk.ugent.be/vpn/en/faq_cisco.php?id=51 terminated locally by the Client. 412: The remote peer is no longer responding. https://www.bol.ucla.edu/alert/20110722.html Secure VPN connection terminated locally by the client. Reason 413: User authentication failed Reason 421: Failed to establish a connection to your ISP. Cisco VPN Client displays the message "Reason 422": Lost contact with the security gateway. Check your network connection". The connection to the RoamNet VPN Gateway is no longer available. Secure VPN vpn client Connection terminated locally by the Client. Reason 429: Unable to resolve server address. Secure VPN Connection terminated locally by the Client. Reason 442: Failed to enable Virtual Adapter. Error 1609: An error occurred while applying security settings. Authenticated ... Error 1722: There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or cisco vpn client package vendor. (error when installing Cisco) Error 28000 (error when installing Cisco because there is still (a part of) an old installation present on the system) When installing Cisco, a 'DNE error' occurs and you are asked to restart Windows XP When starting the VPN connection, the computer shuts down (or generates a blue screen). Error 427: unknown error occurred at peer. Mac Error 51: Unable to communicate with the VPN subsystem Solution: If you are running Cisco's VPNClient on Mac OSX, you might be familiar with (or tormented by) "Error 51: Unable to communicate with the VPN subsystem". The simple fix is to quit VPNClient, open a Terminal window, (Applications -> Utilities -> Terminal) and type the following: sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart and give your password when asked to. This will stop and start the "VPN Subsystem", or in other words restart the CiscoVPN.kext extension. Cisco seems to have problems when network adapters disappear and reappear, something that happens commonly in Wireless or Dial-up scenarios. Bron: http://www.anders.com/cms/192/CiscoVPN/Error.51:.Unable.to.communicate.with top Contact Helpdesk Follow the announcements of the helpdesk on Other UGent sites: Home UGent | Minerva | Oasis ©2016Ghent University, disclaimer Paginanavigatie Helpdesk ICT UGentNet E-mail Account & password Athena & softwar
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