Draytek Vigor 2950Gi User's Guide download pdf (Page 153)

igor2930 Series User’s Guide

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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.

GRE over IPSec Settings

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.

TCP/IP Network Settings

My WAN 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 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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