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Page 66 / 157 Scroll up to view Page 61 - 65
Wireless ADSL2+ Modem Router DG834Gv5 User Manual
4-13
Managing Your Network
v1.0, March 2010
•
To allow access from any IP address on the Internet, select
Everyone
.
•
To allow access from a range of IP addresses on the Internet, select
IP address range
.
Enter a beginning and ending IP address to define the allowed range.
•
To allow access from a single IP address on the Internet, select
Only This Computer
.
Enter the IP address that will be allowed access.
5.
Specify the port number that will be used for accessing the management interface.
Web browser access normally uses the standard HTTP service port 80. For greater security,
you can change the remote management Web interface to a custom port by entering that
number in the field provided. Choose a number between 1024 and 65535, but do not use the
number of any common service port. The default is 8080, which is a common alternate for
HTTP.
6.
Click
Apply
to have your changes take effect.
When accessing your modem router from the Internet, you will type your modem router WAN
IP address in your Internet browser address or location field, followed by a colon (:) and the
custom port number. For example, if your external address is 134.177.0.123 and you use port
number 8080, enter:
Note:
In this case, you must include http:// in the address.
Page 67 / 157
5-1
v1.0, March 2010
Chapter 5
Advanced Configuration
This chapter describes how to configure the advanced features of your ADSL2+ Modem Wireless
Router.
The modem router provides a variety of advanced features, such as the following:
•
“Modifying Your WAN Setup”
•
“Configuring Your LAN IP Settings”
•
“Using the Modem Router as a DHCP Server”
•
“Configuring Dynamic DNS”
•
“Using Static Routes”
•
“Configuring Universal Plug and Play (UPnP)”
These features are discussed in the following sections of this chapter.
Modifying Your WAN Setup
To view or change the WAN Setup:
1.
Log in to the modem router at its default LAN address of
with its user name
of
admin
and using the password you have chosen.
Page 68 / 157
Wireless ADSL2+ Modem Router DG834Gv5 User Manual
5-2
Advanced Configuration
v1.0, March 2010
2.
From the main menu, select WAN Setup to display the WAN Setup screen:
3.
Make the changes that you want, and then click
Apply
to save the settings.
The WAN Setup fields are described in the following table:
Figure 5-1
Table 5-1.
WAN Setup Settings
Setting
Description
Connect Automatically, as
Required
Usually, this check box is selected, so that an Internet connection is
made automatically, whenever Internet-bound traffic is detected. If this
causes high connection costs, you can disable this setting.
•
If disabled, you must connect manually, using the screen accessed
from the
Connection Status
button on the Router Status screen.
•
If you have an “Always on” connection, this setting has no effect.
Enable PPPOE-RELAY
If this check box is selected, this feature allows a PPPoE client on a
local PC to a remote PPPoE server with the gateway acting as a relay
agent.
Disable Port Scan and DOS
Protection
This check box is usually clear so that the firewall protects your LAN
against port scans and denial of service (DOS) attacks. This check box
should be selected only in special circumstances.
Default DMZ Server
This feature is sometimes helpful when you are using some online
games and videoconferencing. Be careful when using this feature
because it makes the firewall security less effective. See
“Setting Up a
Default DMZ Server” on page 5-3
.
Page 69 / 157
Wireless ADSL2+ Modem Router DG834Gv5 User Manual
Advanced Configuration
5-3
v1.0, March 2010
Setting Up a Default DMZ Server
The default DMZ server feature is helpful when you are using some online games and
videoconferencing applications that are incompatible with NAT. The modem router is programmed
to recognize some of these applications and to work properly with them, but there are other
applications that may not function well. In some cases, one local computer can run the application
properly if that computer’s IP address is entered as the default DMZ server.
Incoming traffic from the Internet is normally discarded by the modem router unless the traffic is a
response to one of your local computers or a service that you have configured in the Ports screen.
Instead of discarding this traffic, you can have it forwarded to one computer on your network. This
computer is called the default DMZ server.
To assign a computer or server to be a default DMZ server:
1.
Go to the WAN Setup screen as described in the previous section.
2.
Select the
Default DMZ Server
check box.
3.
Type the IP address for that server.
4.
Click
Apply
to save your changes.
Respond to Pin on Internet
WAN Port
If you want the modem router to respond to a ping from the Internet,
select this check box. This should be used only as a diagnostic tool,
since it allows your modem router to be discovered. Do not select this
check box unless you have a specific reason to do so.
MTU Size (in bytes)
The normal MTU (Maximum Transmit Unit) value for most Ethernet
networks is 1500 bytes, or 1492 Bytes for PPPoE connections. For
some ISPs you might need to reduce the MTU. This is rarely required,
and should not be done unless you are sure it is necessary for your ISP
connection.
Warning:
For security reasons, you should avoid using the default DMZ server feature.
When a computer is designated as the default DMZ server, it loses much of
the protection of the firewall, and is exposed to many exploits from the
Internet. If compromised, the computer can be used to attack your network.
Table 5-1.
WAN Setup Settings
(continued)
Setting
Description
Page 70 / 157
Wireless ADSL2+ Modem Router DG834Gv5 User Manual
5-4
Advanced Configuration
v1.0, March 2010
Configuring Your LAN IP Settings
The LAN IP Setup screen allows configuration of LAN IP services such as DHCP and RIP. These
features can be found under the Advanced heading in the modem router main menu.
The modem router is shipped preconfigured to use private IP addresses on the LAN side, and to act
as a DHCP server. The modem router default LAN IP configuration is:
•
LAN IP addresses: 192.168.0.1
•
Subnet mask: 255.255.255.0
These addresses are part of the Internet Engineering Task Force (IETF)-designated private address
range for use in private networks, and should be suitable in most applications. If your network has
a requirement to use a different IP addressing scheme, you can make those changes in this screen.
To view or change the LAN IP Setup:.
1.
Select LAN IP to display the LAN IP Setup screen:
2.
Change the settings. For more information, see
Table 5-2
,
“Using the Modem Router as a
DHCP Server” on page 5-6
or
“Defining Reserved IP Addresses” on page 5-7
.
Warning:
If you change the LAN IP address of the modem router while connected
through the browser, you will be disconnected and so will others connected to
the modem router. To connect to the modem router, you must open a new
connection to the new IP address and log in again. Others using the modem
router must restart their computers to connect to the modem router again.
Figure 5-2

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