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Page 91 / 154 Scroll up to view Page 86 - 90
Reference Manual for the Model DG824M Wireless ADSL Modem Gateway
Advanced Configuration
6-7
2.
From the Main Menu, under Advanced, click the LAN IP Setup link to view the menu, shown
in
Figure 6-3
Figure 6-3: LAN IP Setup Menu
3.
Enter the TCP/IP, MTU, DHCP, or Reserved IP parameters.
4.
Click Apply to save your changes.
Configuring Dynamic DNS
If your network has a permanently assigned IP address, you can register a domain name and have
that name linked with your IP address by public Domain Name Servers (DNS). However, if your
Internet account uses a dynamically assigned IP address, you will not know in advance what your
IP address will be, and the address can change frequently. In this case, you can use a commercial
dynamic DNS service, who will allow you to register your domain to their IP address, and will
forward traffic directed at your domain to your frequently-changing IP address.
Page 92 / 154
Reference Manual for the Model DG824M Wireless ADSL Modem Gateway
6-8
Advanced Configuration
The gateway contains a client that can connect to a dynamic DNS service provider. To use this
feature, you must select a service provider and obtain an account with them. After you have
configured your account information in the gateway, whenever your ISP-assigned IP address
changes, your gateway will automatically contact your dynamic DNS service provider, log in to
your account, and register your new IP address.
Procedure 6-2:
Configure Dynamic DNS
1.
Log in to the gateway at its default LAN address of http://192.168.0.1 with its default User
Name of
admin
, default password of
password
, or using whatever User Name, Password and
LAN address you have chosen for the gateway.
2.
From the Main Menu of the browser interface, under Advanced, click on Dynamic DNS.
3.
Access the website of one of the dynamic DNS service providers whose names appear in the
‘Select Service Provider’ box, and register for an account.
For example, for dyndns.org, go to www.dyndns.org.
4.
Select the “Use a dynamic DNS service” check box.
5.
Select the name of your dynamic DNS Service Provider.
6.
Type the Host Name that your dynamic DNS service provider gave you.
The dynamic DNS service provider may call this the domain name. If your URL is
myName.dyndns.org, then your Host Name is “myName.”
7.
Type the User Name for your dynamic DNS account.
8.
Type the Password (or key) for your dynamic DNS account.
9.
If your dynamic DNS provider allows the use of wildcards in resolving your URL, you may
select the Use wildcards check box to activate this feature.
For example, the wildcard feature will cause *.yourhost.dyndns.org to be aliased to the same
IP address as yourhost.dyndns.org
10.
Click Apply to save your configuration.
Note:
If your ISP assigns a private WAN IP address such as 192.168.x.x or 10.x.x.x, the
dynamic DNS service will not work because private addresses will not be routed on the
Internet.
Page 93 / 154
Reference Manual for the Model DG824M Wireless ADSL Modem Gateway
Advanced Configuration
6-9
Using Static Routes
Static Routes provide additional routing information to your gateway. Under normal
circumstances, the gateway has adequate routing information after it has been configured for
Internet access, and you do not need to configure additional static routes. You must configure
static routes only for unusual cases such as multiple routers or multiple IP subnets located on your
network.
Static Route Example
As an example of when a static route is needed, consider the following case:
•
Your primary Internet access is through a cable modem to an ISP.
•
You have an ISDN router on your home network for connecting to the company where
you are employed. This router’s address on your LAN is 192.168.0.100.
•
Your company’s network is 134.177.0.0.
When you first configured your gateway, two implicit static routes were created. A default route
was created with your ISP as the gateway, and a second static route was created to your local
network for all 192.168.0.x addresses. With this configuration, if you attempt to access a device on
the 134.177.0.0 network, your gateway will forward your request to the ISP. The ISP forwards
your request to the company where you are employed, and the request will likely be denied by the
company’s firewall.
In this case you must define a static route, telling your gateway that 134.177.0.0 should be
accessed through the ISDN router at 192.168.0.100. The static route would look like
Figure 6-5
.
In this example:
•
The Destination IP Address and IP Subnet Mask fields specify that this static route applies to
all 134.177.x.x addresses.
•
The Gateway IP Address fields specifies that all traffic for these addresses should be
forwarded to the ISDN router at 192.168.0.100.
•
A Metric value of 1 will work since the ISDN router is on the LAN.
This represents the number of routers between your network and the destination. This is a
direct connection so it is set to 1.
•
Private is selected only as a precautionary security measure in case RIP is activated.
Page 94 / 154
Reference Manual for the Model DG824M Wireless ADSL Modem Gateway
6-10
Advanced Configuration
Procedure 6-3:
Configuring Static Routes
1.
Log in to the gateway at its default LAN address of http://192.168.0.1 with its default User
Name of
admin
, default password of
password
, or using whatever User Name, Password and
LAN address you have chosen for the gateway.
2.
From the Main Menu of the browser interface, under Advanced, click on Static Routes to view
the Static Routes menu, shown in
Figure 6-4
.
Figure 6-4: Static Routes Table
3.
To add or edit a Static Route:
a.
Click the
Edit
button to open the Edit Menu, shown in
Figure 6-5
.
Figure 6-5: Static Route Entry and Edit Menu
b.
Type a route name for this static route in the Route Name box under the table.
This is for identification purpose only.
Page 95 / 154
Reference Manual for the Model DG824M Wireless ADSL Modem Gateway
Advanced Configuration
6-11
c.
Select
Active
to make this route effective.
d.
Select
Private
if you want to limit access to the LAN only.
The static route will not be reported in RIP.
e.
Type the Destination IP Address of the final destination.
f.
Type the IP Subnet Mask for this destination.
If the destination is a single host, type 255.255.255.255.
g.
Type the Gateway IP Address, which must be a router on the same LAN segment as the
gateway.
h.
Type a number between 1 and 15 as the Metric value.
This represents the number of routers between your network and the destination. Usually,
a setting of 2 or 3 works, but if this is a direct connection, set it to 1.
4.
Click
Apply
to have the static route entered into the table.

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