Nov 06, 2014

Dec 18, 2006 Cisco VPN Client Error 51 - Open Your Firewall - Domain 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. Most of Internet discussions on this error message revolve around MAC OS. But this error I … Cisco VPN Client Error 51 message since u… - Apple Community Aug 16, 2011 Cisco VPN and Lion - Error 51 - Apple Community Sep 16, 2011

Sep 16, 2011

Avast SecureLine VPN - FAQs | Official Avast Support

VPN Error – Here Are Some Common VPN Errors & Their Solution

Hi, yes, the cisco vpn client is not supported with the 64bit lion version anymore. I am using since the lion update now the Mac integrated VPN client (Network Preferences, +, VPN, Cisco IPSec, etc.) Cisco VPN error 51 on OSX Dec 18, 2006 Cisco VPN Client Error 51 - Open Your Firewall - Domain