Draytek Vigor2910 Series User Manual page 141

GRE over IPSec Settings
My WAN IP
Remote Gateway IP
Remote Network IP/
Remote Network Mask
Local Network IP/
Local Network Mask
Vigor2910 Series User's Guide
Callback number-The option is for extra security. Once
enabled, the router will ONLY call back to the specified
Callback Number.
Callback Budget (Unit: minutes) - By default, the callback
function has limitation of callback period. Once the callback
budget is exhausted, the function will be disabled
automatically. Specify the time budget for the dial-in user.
The budget will be decreased automatically per callback
connection. The default value 0 means no limitation of
callback period.
Enable IPSec Dial-Out function GRE over IPSec: Check
this box to verify data and transmit data in encryption with
GRE over IPSec packet after configuring IPSec Dial-Out
setting. Both ends must match for each other by setting same
virtual IP address for communication.
Logical Traffic: Such technique comes from RFC2890.
Define logical traffic for data transmission between both sides
of VPN tunnel by using the characteristic of GRE. Even
hacker can decipher IPSec encryption, he/she still cannot ask
LAN site to do data transmission with any information. Such
function can ensure the data transmitted on VPN tunnel is
really sent out from both sides. This is an optional function.
However, if one side wants to use it, the peer must enable it,
too.
My GRE IP: Type the virtual IP for router itself for verified
by peer.
Peer GRE IP: Type the virtual IP of peer host for verified by
router.
This field is only applicable when you select ISDN, PPTP or
L2TP with or without IPSec policy above. The default value is
0.0.0.0, which means the Vigor router will get a PPP IP
address from the remote router during the IPCP negotiation
phase. If the PPP IP address is fixed by remote side, specify
the fixed IP address here. Do not change the default value if
you do not select ISDN, PPTP or L2TP.
This field is only applicable when you select ISDN, PPTP or
L2TP with or without IPSec policy above. The default value is
0.0.0.0, which means the Vigor router will get a remote
Gateway PPP IP address from the remote router during the
IPCP negotiation phase. If the PPP IP address is fixed by
remote side, specify the fixed IP address here. Do not change
the default value if you do not select ISDN, PPTP or L2TP.
Add a static route to direct all traffic destined to this Remote
Network IP Address/Remote Network Mask through the VPN
connection. For IPSec, this is the destination clients IDs of
phase 2 quick mode.
Add a static route to direct all traffic destined to Local
Network IP Address/Local Network Mask through the VPN
connection.
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