Draytek Vigor2930 Series User Manual page 144

IKE Authentication
Method
IPSec Security Method
Callback Function
PIN Code – Type the code for authentication (e.g, 1234).
Secret – Use the 32 digit-secret number generated by mOTP
in the mobile phone (e.g., e759bb6f0e94c7ab4fe6).
This group of fields is applicable for IPSec Tunnels and L2TP
with IPSec Policy when you specify the IP address of the
remote node. The only exception is Digital Signature (X.509)
can be set when you select IPSec tunnel either with or without
specify the IP address of the remote node.
Pre-Shared Key - Check the box of Pre-Shared Key to invoke
this function and type in the required characters (1-63) as the
pre-shared key.
Digital Signature (X.509) – Check the box of Digital
Signature to invoke this function and Select one predefined
Profiles set in the VPN and Remote Access >>IPSec Peer
Identity.
This group of fields is a must for IPSec Tunnels and L2TP
with IPSec Policy when you specify the remote node. Check
the Medium, DES, 3DES or AES box as the security method.
Medium - Authentication Header (AH) means data will be
authenticated, but not be encrypted. By default, this option is
invoked. You can uncheck it to disable it.
High-Encapsulating Security Payload (ESP) means payload
(data) will be encrypted and authenticated. You may select
encryption algorithm from Data Encryption Standard (DES),
Triple DES (3DES), and AES.
Local ID - Specify a local ID to be used for Dial-in setting in
the LAN-to-LAN Profile setup. This item is optional and can
be used only in IKE aggressive mode.
The callback function provides a callback service only for the
ISDN dial-in user (for i model only). The remote user will be
charged the connection fee by the telecom.
Check to enable Callback function-Enables the callback
function.
Specify the callback number-The option is for extra security.
Once enabled, the router will ONLY call back to the specified
Callback Number.
Check to enable callback budget control-By default, the
callback function has a time restriction. Once the callback
budget has been exhausted, the callback mechanism will be
disabled automatically.
Callback Budget (Unit: minutes)- Specify the time budget
for the dial-in user. The budget will be decreased
automatically per callback connection.
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Vigor2930 Series User's Guide