Mac OS Cisco VPN auto disconnect

Refer to http://imwuyu.me/talk-about/something-about-vpn.html/

Create a new Cisco IPSec connection.

Copy the created conf file to /etc/racoon in Terminal

  sudo cp /var/run/racoon/xxx.xxx.xxx.xxx.conf /etc/racoon

Edit the racoon.conf:

  sudo vim /etc/racoon/racoon.conf

Comment the last line

  # include "/var/run/racoon/*.conf" ;

Add the follow line to the bottom

1 include "/etc/racoon/xxx.xxx.xxx.xxx.conf" ;

Edit IPSec conf file

  sudo vim /etc/racoon/xxx.xxx.xxx.xxx.conf

Disable dead peer detection:

  dpd_delay 0;

Change Proposal to claim（**Important**, default is obey）:

  proposal_check claim;

Edit lifetime (default is 3600 sec):

 
  lifetime time 24 hours;

Reconnect Cisco IPSec

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