Draytek Vigor2800 Series User Manual page 80

ISDN
PPTP
IPSec Tunnel
L2TP with ...
User Name
Password
PPP Authentication
VJ compression
IKE Authentication
Method
IPSec Security Method
Medium
74
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).
Build ISDN dial-out connection to the server. You should set up
Link Type and identity like User Name and Password for the
authentication of remote server. You can further set up Callback
(CBCP) function below. This feature is useful for i model only.
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.
Build a IPSec VPN connection to the server through Internet.
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 w/ or
w/out IPSec policy above.
This field is applicable when you select PPTP or L2TP w/ or
w/out IPSec policy above.
This field is applicable when you select PPTP or L2TP w/ or
w/out IPSec policy above. PAP/CHAP is the most common
selection due to wild compatibility.
This field is applicable when you select PPTP or L2TP w/ or
w/out IPSec policy above. VJ Compression is used for TCP/IP
protocol header compression. Normally set to Yes to improve
bandwidth utilization.
This group of fields is applicable for IPSec Tunnels and L2TP
with IPSec Policy.
Pre-Shared Key-Input 1-63 characters as pre-shared key.
Digital Signature (X.509) - Select one predefined in the
X.509 Peer ID Profiles.
This group of fields is a must for IPSec Tunnels and L2TP with
IPSec Policy.
Authentication Header (AH) means data will be authenticated,
but not be encrypted. By default, this option is active.
High (ESP-Encapsulating Security Payload)- means payload
(data) will be encrypted and authenticated. Select from below:
Vigor2800 Series User's Guide