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Page 81 / 162 Scroll up to view Page 76 - 80
Reference Manual for the MR814 v3 Cable/DSL Wireless Router
Advanced Configuration of the Router
7-9
202-10039-01
2.
In the IP Address box, type the IP address to assign to the PC or server.
(choose an IP address from the router’s LAN subnet, such as 192.168.0.X)
3.
Type the MAC Address of the PC or server.
(Tip: If the PC is already present on your network, you can copy its MAC address from the
Attached Devices menu and paste it here.)
4.
Click Apply to enter the reserved address into the table.
Note: The reserved address will not be assigned until the next time the PC contacts the router's
DHCP server. Reboot the PC or access its IP configuration and force a DHCP release and renew.
To edit or delete a reserved address entry:
1.
Click the button next to the reserved address you want to edit or delete.
2.
Click Edit or Delete.
Using a Dynamic DNS Service
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.
The router contains a client that can connect to many popular dynamic DNS services. You can
select one of these services and obtain an account with them. Then, whenever your ISP-assigned
IP address changes, your router will automatically contact your dynamic DNS service provider,
log in to your account, and register your new IP address.
From the Main Menu of the browser interface, under Advanced, click on Dynamic DNS. To
configure Dynamic DNS:
1.
Register for an account with one of the dynamic DNS service providers whose names appear
in the ‘Select Service Provider’ box. For example, for dyndns.org, go to www.dyndns.org.
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.
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Reference Manual for the MR814 v3 Cable/DSL Wireless Router
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Advanced Configuration of the Router
202-10039-01
2.
Select the Use a dynamic DNS service check box.
3.
Select the name of your dynamic DNS Service Provider.
4.
Type the Host Name (or domain name) that your dynamic DNS service provider gave you.
5.
Type the User Name for your dynamic DNS account.
6.
Type the Password (or key) for your dynamic DNS account.
7.
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
8.
Click Apply to save your configuration.
Configuring Static Routes
Static Routes provide additional routing information to your router. Under normal circumstances,
the router 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.
From the Main Menu of the browser interface, under Advanced, click on Static Routes to view the
Static Route menu, shown below.
Figure 7-4.
Static Route Summary Table
To add or edit a Static Route:
Page 83 / 162
Reference Manual for the MR814 v3 Cable/DSL Wireless Router
Advanced Configuration of the Router
7-11
202-10039-01
1.
Click the Add button to open the Add/Edit Menu, shown below.
Figure 7-5.
Static Route Entry and Edit Menu
2.
Type a route name for this static route in the Route Name box under the table.
(This is for identification purpose only.)
3.
Select Private if you want to limit access to the LAN only. The static route will not be reported
in RIP.
4.
Select Active to make this route effective.
5.
Type the Destination IP Address of the final destination.
6.
Type the IP Subnet Mask for this destination.
If the destination is a single host, type 255.255.255.255.
7.
Type the Gateway IP Address, which must be a router on the same LAN segment as the router.
8.
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.
9.
Click Apply to have the static route entered into the table.
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.
Page 84 / 162
Reference Manual for the MR814 v3 Cable/DSL Wireless Router
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Advanced Configuration of the Router
202-10039-01
When you first configured your router, 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 router 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 router that 134.177.0.0 should be accessed
through the ISDN router at 192.168.0.100. The static route would look like
Figure 7-5
.
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.
•
Private is selected only as a precautionary security measure in case RIP is activated.
Enabling Remote Management Access
Using the Remote Management page, you can allow a user or users on the Internet to configure,
upgrade and check the status of your MR814 v3 router.
To configure your router for Remote Management:
1.
Select the Turn Remote Management On check box.
2.
Specify what external addresses will be allowed to access the router’s remote management.
Note:
For enhanced security, restrict access to as few external IP addresses as practical.
a.
To allow access from any IP address on the Internet, select Everyone.
Note:
Be sure to change the router's default configuration password to a very secure
password. The ideal password should contain no dictionary words from any language,
and should be a mixture of letters (both upper and lower case), numbers, and symbols.
Your password can be up to 30 characters.
Page 85 / 162
Reference Manual for the MR814 v3 Cable/DSL Wireless Router
Advanced Configuration of the Router
7-13
202-10039-01
b.
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.
c.
To allow access from a single IP address on the Internet, select Only this PC.
Enter the IP address that will be allowed access.
3.
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,
change the remote management web interface to a custom port by entering that number in the
box 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.
4.
Click Apply to have your changes take effect.
Note:
When accessing your router from the Internet, you will type your router's WAN IP address
into your browser's Address (in IE) or Location (in Netscape) box, 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, you must enter http://134.177.0.123:8080 in your browser.
Using Universal Plug and Play (UPnP)
Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers,
access the network and connect to other devices as needed. UPnP devices can
automatically discover the services from other registered UPnP devices on the network.
Figure 7-6.
UPnP Menu

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