Delete: to delete the connection, also will delete IPSEC if IPSEC has set up 
Edit: to edit the configure information of this connection, reload this connection to 
make the configuration effect after edit 
Reconnect: this action will remove current tunnel, and re-launch tunnel establish 
request 
Enable: when the connection is enable, it will launch tunnel establish request 
when the system reboot or reconnect, otherwise the connection will not do it 
Add: to add a new IPSEC connection 
 
Add IPSEC connection or edit IPSEC connection 
Type: to choose IPSEC mode: 
     Net-to-Net VPN: create a site-to-site tunnel 
     Host-to-Host VPN: create a client-to-site tunnel 
 
Connection: this part contains basic address information of the tunnel 
 
Name: to indicate this connection name, must be unique 
Enabled: check to enable this tunnel to connect.