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Mark Harrison
Asked: 2009-08-22 11:55:22 +0800 CST

Resetting Cisco VPN on a Mac?

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Sometimes our Macs will get 

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.

when starting Cisco VPN.

Rebooting doesn't help. Reinstalling requires reconfiguring the settings.

What's the best way to reset Cisco VPN when we get this error?

vpn

2 Answers

  1. From a terminal window:

    sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart
    • 3
  2. Best Answer

    Alternative command:

    sudo SystemStarter restart CiscoVPN

    • 2