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Page 96 / 115 Scroll up to view Page 91 - 95
DG-BR4000N/E User Manual
96
10-2 WAN Setup
Choose
Security Options > WAN Setup
and the WAN Setup page appears.
In this page, you can set a default DMZ server and allow the router to respond to the ping
command from the Internet. Do not use the two functions unless it is necessary because
they lead to security risks. DMZ allows all ports of a PC in your LAN to be exposed to the
WAN. Enter the IP address of a PC to set the PC to a DMZ host, which is not restricted by
the firewall any more. In this way, the DMZ host can have mutually unrestricted
communcation with a user or server on the WAN.
The following table describes parameters in this page:
Item
Description
Disable Port
Scan and DOS
Protection
This function protects your LAN against DoS attack. Do not disable this
firewall function unless a special situation occurs.
Respond to
Ping on
Internet Port
If you want the router to respond to ping commands from the Internet,
select the check box. The ping command can be used for diagnosis. Like
a DMZ server, this function also leads to security risks. Hence, do not
select the check box unless it is necessary.
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Disable IGMP
Proxying
IGMP proxy allows a PC in the LAN to receive certain multicast traffics
from the Internet. If you do not want to use IGMP proxy, select the
check box to disable IGMP proxy.
Default DMZ
Server
Enter the IP address of a computer or server that serves as a DMZ server.
MTU Size (in
bytes)
The maximum transmission unit. Normally, it is 1500 bytes for most
Ethernet networks, 1492 bytes for PPPoE connection and 1436 bytes for
PPTP connection. Certain ISPs may require smaller MTU, but this is a
rare case. Do not modify the value of MTU size unless it is necessary for
your ISP connection.
NAT Filtering
Determines the mode of the router to handle the input traffics.
•
Secured: It provides a secure firewall that protects personal
computers in a LAN against attacks from the Internet.
However, it causes malfunction of certain network
games, point-to-point (P2P) applications and multimedia
applications.
•
Open: It provides firewall settings of a lower security level. It
allows running of almost all network applications.
Enable IPv6
Pass-Through
By default, IPv6 pass-through is disabled. If your configuration contains
IPv6 devices and you want to replace IPv4 with IPv6, you can select the
check box to enable IPv6 pass-through.
After the settings are done, click Apply to save the settings.
Page 98 / 115
DG-BR4000N/E User Manual
98
11. System Tools
Click System Tools and the extended navigation menu is shown as follows:
The submenu contains Schedules, SNTP, Backup Settings, Set Password and Router
Upgrade
11-1 Schedules
Choose
System Tools > Schedules
and the Schedules page appears.
Page 99 / 115
DG-BR4000N/E User Manual
99
If you already set content filtering in the Block Sites page or set sevice filtering in the Block
Services page, you can set a schedule to specify the time and mode of restricting Internet
access.
The following table describes parameters in this page:
Item
Description
Days to Block
Select every day, one day, or several days.
Time of Day to Block
(Use 24-hour clock)
If you want to fully restrict access every day, select All Day.
If you want to restrict access in a specific time during certain
days, select the days and enter the starting time and ending time.
Note that the system uses 24-hour clock.
After settings are done, click Apply to save the settings.
11-2 SNTP
Choose
System Tools > SNTP
and the SNTP page appears.
Page 100 / 115
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In this page, you can set the time information of your router. It is strongly recommended to
set the correct time on the router first. This ensures proper functioning of log, site blocking
and schedule, because these functions are based on the time setting in this page.
The following table describes parameters in this page:
Item
Description
Time Setting
Automatically synchronize with Internet time servers: Enable or
disable automatic synchronization with the network time server.
•
First NTP time server: Enter the URL of the primary network
time server.
•
Second NTP time server: Enter the URL of the secondary time
server.
Time
Configuration
•
Current Router Time: Displays the current system time of the
router.
•
Time Zone: Select the time zone that the router is in from the
drop-down list.
Enable Daylight
Saving
Enable or disable daylight saving time (DST), which is a practice of
temporarily advancing clocks during the summertime so that
afternoons have more daylight and mornings have less. It helps
saving the lighting power.
Daylight Saving
Offset
Select a proper offset. If it is set to +1:00, 10:00 in the morning in
standard time becomes 11:00 in the morning in DST.
Daylight Saving
Dates
Set the starting time and ending time of DST.
After the settings are done, click Apply to save the settings.

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