Draytek Vigor2110 Series User Manual page 200

User account and
Authentication
Allowed Dial-In Type
Enable this account - Check the box to enable this function.
Idle Timeout- If the dial-in user is idle over the limitation of
the timer, the router will drop this connection. By default, the
Idle Timeout is set to 300 seconds.
PPTP - Allow the remote dial-in user to make a PPTP VPN
connection through the Internet. You should set the User
Name and Password of remote dial-in user below.
IPSec Tunnel - Allow the remote dial-in user to make an
IPSec VPN connection through Internet.
L2TP with IPSec Policy - Allow the remote dial-in user to
make 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-in
VPN connection becomes one pure L2TP connection.
Must -Specify the IPSec policy to be definitely applied
on the L2TP connection.
Specify Remote Node
Check the checkbox-You can specify the IP address of the
remote dial-in user, ISDN number or peer ID (used in IKE
aggressive mode).
Uncheck the checkbox-This means the connection type you
select above will apply the authentication methods and
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Vigor2110 Series User's Guide