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Page 66 / 124 Scroll up to view Page 61 - 65
NETGEAR RangeMax™ Wireless-N Gigabit Router WNR3500v2 User Manual
5-6
Customizing Your Network Settings
v1.0, May 2009
From the main menu of the browser interface, under Advanced, select
Dynamic DNS
to display
the Dynamic DNS screen.
To configure Dynamic DNS:
1.
Register for an account with one of the Dynamic DNS service providers whose names appear
in the
Service Provider
list. For example, for DynDNS.org, select
www.dyndns.org
.
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. This is the name that you use to log in to
your account, not your host name.
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 can
select the
Use Wildcards
check box to activate this feature.
For example, the wildcard feature causes *.yourhost.dyndns.org to be aliased to the same IP
address as yourhost.dyndns.org.
8.
Click
Apply
to save your configuration.
Figure 5-2
Page 67 / 124
NETGEAR RangeMax™ Wireless-N Gigabit Router WNR3500v2 User Manual
Customizing Your Network Settings
5-7
v1.0, May 2009
Configuring the WAN Setup Options
The WAN Setup screen lets you configure a DMZ (demilitarized zone) server, change the
Maximum Transmit Unit (MTU) size, and enable the wireless router to respond to a ping on the
WAN (Internet) port. From the main menu, under Advanced, click
WAN Setup
to view the WAN
Setup screen.
The WAN Setup fields are described in the following table:
Figure 5-3
Table 5-2.
WAN Setup Settings
Setting
Description
Disable SPI Firewall
The Stateful Packet Inspection (SPI) firewall protects your network and
computers against attacks and intrusions. A stateful packet firewall carefully
inspects incoming traffic packets, looking for known exploits such as
malformed, oversized, or out-of-sequence packets. The firewall should be
disabled only in special circumstances, such as when you are troubleshooting
application issues.
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 the following section,
Setting Up a Default
DMZ Server
.
Respond to Ping on Internet
WAN Port
If you want the wireless 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 wireless router to be discovered. Do not select this check box unless you
have a specific reason to do so.
Page 68 / 124
NETGEAR RangeMax™ Wireless-N Gigabit Router WNR3500v2 User Manual
5-8
Customizing Your Network Settings
v1.0, May 2009
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 Network Address Translation (NAT).
The router is programmed to recognize some of these applications and to work correctly with
them, but there are other applications that might not function well. In some cases, one local
computer can run the application correctly if that computer’s IP address is entered as the default
DMZ server.
Incoming traffic from the Internet is usually discarded by the router unless the traffic is a response
to one of your local computers or a service that you have configured in the Port Forwarding/Port
Triggering 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.
The WAN Setup screen lets you configure a default DMZ server.
To assign a computer or server to be a default DMZ server:
1.
In the last
Default DMZ Server
field, type the last digit of the IP address for that computer.
To remove the default DMZ server, enter 0 (zero).
2.
Select the
Default DMZ Server
check box, and click
Apply
.
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. See
“Changing
the MTU Size” on page 6-6
.
NAT Filtering
Network Address Translation (NAT) determines how the router processes
inbound traffic. Secured NAT provides a secured firewall to protect the
computers on the LAN from attacks from the Internet, but might prevent some
Internet games, point-to-point applications, or multimedia applications from
functioning. Open NAT provides a much less secured firewall, but allows
almost all Internet applications to function.
Warning:
DMZ servers pose a security risk. A computer designated as the default DMZ
server loses much of the protection of the firewall, and is exposed to exploits
from the Internet. If compromised, the DMZ server computer can be used to
attack other computers on your network.
Table 5-2.
WAN Setup Settings
Setting
Description
Page 69 / 124
NETGEAR RangeMax™ Wireless-N Gigabit Router WNR3500v2 User Manual
Customizing Your Network Settings
5-9
v1.0, May 2009
Configuring Static Routes
Static routes provide additional routing information to your router. Under usual 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.
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
1
92.168.1.100.
•
Your company’s network address is 134.177.0.0.
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 192.168.1.x addresses. With this configuration, if you attempt to access a device on the
134.177.0.0 network, your router forwards your request to the ISP. The ISP forwards your request
to the company where you are employed, and the request is likely to 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 192.168.1.100.
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
field specifies that all traffic for these addresses should be
forwarded to the ISDN router at 192.168.1.100.
•
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.
Page 70 / 124
NETGEAR RangeMax™ Wireless-N Gigabit Router WNR3500v2 User Manual
5-10
Customizing Your Network Settings
v1.0, May 2009
Select
Static Routes
under Advanced in the main menu. The Static Routes screen displays.
To add or edit a static route:
1.
Click
Add
to expand the Static Routes screen.
2.
In the
Route Name
field, type a name for this static route. (This is for identification purposes
only.)
3.
Select the
Private
check box if you want to limit access to the LAN only. If Private is selected,
the static route is not reported in RIP.
4.
Select the
Active
check box to make this route effective.
5.
Type the 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
.
Figure 5-4
Figure 5-5

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