Draytek Vigor2710 Series User Manual page 214

Always On or Idle
Timeout
Enable PING to keep
alive
PING to the IP
Type of Server I am
calling
User Name
Password
PPP Authentication
VJ compression
Vigor2710 Series User's Guide
Always On-Check to enable router always keep VPN
connection.
Idle Timeout: The default value is 300 seconds. If the
connection has been idled over the value, the router will drop
the connection.
This function is to help the router to determine the status of
IPSec VPN connection, especially useful in the case of
abnormal VPN IPSec tunnel disruption. For details, please
refer to the note below. Check to enable the transmission of
PING packets to a specified IP address.
Enter the IP address of the remote host that located at the
other-end of the VPN tunnel.
Enable PING to keep alive is used to handle abnormal IPSec
VPN connection disruption. It will help to provide the state of a
VPN connection for router's judgment of redial. Normally, if
any one of VPN peers wants to disconnect the connection, it
should follow a serial of packet exchange procedure to inform
each other. However, if the remote peer disconnect without
notice, Vigor router will by no where to know this situation. To
resolve this dilemma, by continuously sending PING packets to
the remote host, the Vigor router can know the true existence
of this VPN connection and react accordingly. This is
independent of DPD (dead peer detection).
PPTP - Build a PPTP VPN connection to the server through
the Internet. You should set the identity like User Name and
Password below for the authentication of remote server.
IPSec Tunnel - Build an IPSec VPN connection to the server
through Internet.
L2TP with IPSec Policy - Build a L2TP VPN connection
through the Internet. You can select to use L2TP alone or with
IPSec. Select from below:
None: Do not apply the IPSec policy. Accordingly, the VPN
connection employed the L2TP without IPSec policy can be
viewed as one pure L2TP connection.
Nice to Have: Apply the IPSec policy first, if it is applicable
during negotiation. Otherwise, the dial-out VPN connection
becomes one pure L2TP connection.
Must: Specify the IPSec policy to be definitely applied on the
L2TP connection.
This field is applicable when you select, PPTP or L2TP with or
without IPSec policy above.
This field is applicable when you select PPTP or L2TP with or
without IPSec policy above.
This field is applicable when you select, PPTP or L2TP with or
without IPSec policy above. PAP/CHAP is the most common
selection due to wild compatibility.
This field is applicable when you select PPTP or L2TP with or
without IPSec policy above. VJ Compression is used for
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