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Genie Advanced Home
36
N600 Wireless Dual Band Router WNDR3400v2
WPS Wizard
The WPS Wizard helps you add a WPS-capable client device (a wireless device or computer)
to your network. On the client device you need to either press its WPS button or locate its
WPS PIN.
To use the WPS Wizard:
1.
Select
Advanced > WPS Wizard
.
2.
Click
Next
. The following screen lets you select the method for adding the WPS client (a
wireless device or computer).
You can use either the push button or PIN method.
3.
Select either
Push Button
or
PIN Number
.
•
To use the push button method, either click the
WPS
button on this screen, or press
the
WPS
button located on the top of the router. Within two minutes, go to the
wireless client and press its
WPS
button to join the network without entering a
password.
•
To use the PIN method, select the
PIN Number
radio button, enter the client security
PIN, and click
Next
.
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N600 Wireless Dual Band Router WNDR3400v2
Within two minutes, go to the client device and use its WPS software to join the
network without entering a password.
The router attempts to add the WPS-capable device. The WPS LED
on the top of
the router blinks green. When the router establishes a WPS connection, the LED is solid
green, and the router WPS screen displays a confirmation message.
4.
Repeat Step 2 and Step 3 to add another WPS client to your network.
Setup Menu
Select
Advanced > Setup
to display the Setup menu. The following selections are available:
•
Internet Setup
. This is a shortcut to the same Internet Setup screen that you can access
from the dashboard on the Basic Home screen. See
Internet Setup
on page
23.
•
Wireless Setup
. This is a shortcut to the same Wireless Setup screen that you can
access from the dashboard on the Basic Home screen. See
Basic Wireless Settings
on
page
27.
•
Guest Network
. This is a shortcut to the same Guest Network screen that you can
access from the dashboard on the Basic Home screen. See
Guest Networks
on page
31.
•
WAN Setup
. Internet (WAN) setup. See
WAN Setup
on page
38.
•
LAN Setup
. Local area network (LAN) setup. See
LAN Setup
on page
41.
•
QoS Setup
. Quality of Service (QoS) setup. See
Quality of Service (QoS) Setup
on
page
44.
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N600 Wireless Dual Band Router WNDR3400v2
WAN Setup
The WAN Setup screen lets you configure a DMZ (demilitarized zone) server, change the
Maximum Transmit Unit (MTU) size, and enable the router to respond to a ping on the WAN
(Internet) port. Select
Advanced > Setup > WAN Setup
to view the following screen:
•
Disable Port Scan and DoS Protection
. DoS protection protects your LAN against
denial of service attacks such as Syn flood, Smurf Attack, Ping of Death, Teardrop Attack,
UDP Flood, ARP Attack, Spoofing ICMP, Null Scan, and many others. This should be
disabled only in special circumstances.
•
Default DMZ Server
. This feature is sometimes helpful when you are playing online
games and/or videoconferencing. Be careful when using this feature because it makes
the firewall security less effective. See the following section,
Default DMZ Server
, for
more details.
•
Respond to Ping on Internet Port
. If you want the router to respond to a ping from the
Internet, select this check box. Use this only as a diagnostic tool because it allows your
router to be discovered. Do not select this check box unless you have a specific reason.
•
Disable IGMP Proxying
. IGMP proxying allows a computer on the local area network
(LAN) to receive the multicast traffic it is interested in from the Internet. You can select
this check box to disable the feature if you do not need it.
•
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
Change the MTU Size
on page
39.
•
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.
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N600 Wireless Dual Band Router WNDR3400v2
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.
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.
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.
To set up a default DMZ server:
1.
On the WAN Setup screen, select the
Default DMZ Server
check box.
2.
Type the IP address.
3.
Click
Apply
.
Change the MTU Size
The Maximum Transmission Unit (MTU) is the largest data packet a network device
transmits. When one network device communicates across the Internet with another, the data
packets travel through many devices along the way. If any device in the data path has a lower
MTU setting than the other devices, the data packets have to be split or “fragmented” to
accommodate the device with the smallest MTU.
The best MTU setting for NETGEAR equipment is often just the default value, and changing
the value might fix one problem but cause another. Leave MTU unchanged unless one of
these situations occurs:
•
You have problems connecting to your ISP or other Internet service, and the technical
support of either the ISP or NETGEAR recommends changing the MTU setting. These
web-based applications might require an MTU change:
-
A secure website that will not open, or displays only part of a web page
-
Yahoo email
-
MSN portal
-
America Online’s DSL service
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Genie Advanced Home
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N600 Wireless Dual Band Router WNDR3400v2
•
You use VPN and have severe performance problems.
•
You used a program to optimize MTU for performance reasons, and now you have
connectivity or performance problems.
Note:
An incorrect MTU setting can cause Internet communication
problems such as the inability to access certain web sites, frames
within web sites, secure login pages, or FTP or POP servers.
If you suspect an MTU problem, a common solution is to change the MTU to 1400. If you are
willing to experiment, you can gradually reduce the MTU from the maximum value of 1500
until the problem goes away. The following table describes common MTU sizes and
applications.
Table 2.
Common MTU sizes
MTU
Application
1500
The largest Ethernet packet size and the default value. This is the typical setting for
non-PPPoE, non-VPN connections, and is the default value for NETGEAR routers,
adapters, and switches.
1492
Used in PPPoE environments.
1472
Maximum size to use for pinging. (Larger packets are fragmented.)
1468
Used in some DHCP environments.
1460
Usable by AOL if you do not have large email attachments, for example.
1436
Used in PPTP environments or with VPN.
1400
Maximum size for AOL DSL.
576
Typical value to connect to dial-up ISPs.
To change the MTU size:
1.
Select
Advanced > Setup > WAN Setup
.
2.
In the MTU Size field, enter a new size between 64 and 1500.
3.
Click
Apply
to save the settings.

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