Draytek Vigor2930 Series User Manual page 153

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GRE over IPSec Settings Enable IPSec Dial-Out function GRE over IPSec - Check
TCP/IP Network Settings My WAN IP - This field is only applicable when you select
igor2930 Series User's Guide
model only). The remote user will be charged the connection
fee by the telecom.
Check to enable Callback function-Enables the callback
function.
Callback number-The option is for extra security. Once
enabled, the router will ONLY call back to the specified
Callback Number.
Callback budget- By default, the callback function has
limitation of callback period. Once the callback budget is
exhausted, the function 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. The default value 0
means no limitation of callback period.
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.
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.
Remote Gateway IP - 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.
Remote Network IP/ Remote Network Mask - 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.
Local Network IP / Local Network Mask – Type the local
network IP and mask for TCP / IP configuration. You can
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