Draytek Vigor IPPBX 2820n, Руководство пользователя

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VigorIPPBX 2820 Series User’s Guide 308
and Password for the authentication of remote server. You
can further set up Callback (CBCP) function below.
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.
Link Type There are three link types provided here for different
purpose.
Disable disables the LAN to LAN dial-out
function. 64Kbps allows you to use one channel for
Internet access. 128Kbps allows you to use both channels
for Internet access. BOD stands for
bandwidth-on-demand. The router will use only one
channel in low traffic situations. Once the single channel
bandwidth is fully used, the other channel will be
activated automatically through the dialup.
User Name This field is applicable when you select ISDN, PPTP or
L2TP with or without IPSec policy above.
Password This field is applicable when you select ISDN, PPTP or
L2TP with or without IPSec policy above.
PPP Authentication This field is applicable when you select ISDN, PPTP or
L2TP with or without IPSec policy above. PAP/CHAP is
the most common selection due to wild compatibility.
VJ compression This field is applicable when you select ISDN, PPTP or
L2TP with or without IPSec policy above. VJ
Compression is used for TCP/IP protocol header
compression. Normally set to
Yes to improve bandwidth
utilization.
IKE Authentication
Method
This group of fields is applicable for IPSec Tunnels and
L2TP with IPSec Policy.