Netgear Dgn2200v4 N300 Wireless Adsl2 Plus Modem Router User Manual

							NETGEAR genie Basic Settings 31
 N300 Wireless ADSL2+ Modem Router DGN2200v4
Set Up a Guest Network
Adding a guest network allows visitors at your home to use the Internet \
without giving them 
your wireless security key. 
To set up a guest network:
1.  Select  Basic >  Guest Network .
2. Select any of the following wireless settings:
Enable Guest Network . When this check box is selected, the guest network is enabled, 
and guests can connect to your network using the SSID of this profile.
Enable SSID Broadcast. If this check box is selected, the wireless access point 
broadcasts its name (SSID) to all wireless stations. Stations with no \
SSID can adopt the 
correct SSID for connections to this access point.
Allow guest to access My Local Network . If this check box is selected, anyone who 
connects to this SSID has access to your local network, not just Interne\
t access.
Enable Wireless Isolation . If this check box is selected, wireless computers or devices 
that join the network can use the Internet but cannot access each other \
or access 
Ethernet devices on the network.
3.  Give the guest network a name.
The guest network name is case-sensitive and can be up to 32 characters.\
 You then  manually configure the wireless devices in your network to use the guest\
 network name 
in addition to the main SSID. 
4.  Select a security option from the list. 
The security options are described in Wireless Security Options on page  29.
5.  Click  Apply .
Your settings are saved. 
						

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N300 Wireless ADSL2+ Modem Router DGN2200v4 
View Attached Devices
Use the Attached Device screen to view all computers or devices that are current\
ly 
connected to your network.
To go to the Attached Devices screen:
From the Basic Home screen, select Attached Devices.
Wired devices are connected to the modem router with Ethernet cables. Wi\
reless devices 
have joined the wireless network. 
•# (number). 
 The order in which the device joined the network.
• IP Address. 
 The IP address that the modem router assigned to this device when it joi\
ned 
the network. This number can change if a device is disconnected and rejoins the netwo\
rk.
• Device Name. If the device name is known, it is shown here. 
• MAC Address. 
 The unique MAC address for each device does not change. The MAC 
address is typically shown on the product label.
Click Refresh to update this screen. 
						

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4
4.   NETGEAR genie Advanced Home
This chapter contains the following sections:
•NETGEAR genie Advanced Home Screen 
•Setup Wizard 
•WPS Wizard 
•WAN Setup 
•LAN Setup 
•Quality of Service (QoS) Setup 
Some selections on the Advanced Home screen are described in separate chapters:
•USB Storage. See Chapter 5, USB Storage.
•Security. See Chapter 6, Security.
•Administration. See Chapter 7, Administration.
•Advanced Setup. See Chapter 8, Advanced Settings.
•Advanced VPN. See Chapter 9, Virtual Private Networking. 
						

							NETGEAR genie Advanced Home 34
N300 Wireless ADSL2+ Modem Router DGN2200v4 
NETGEAR genie Advanced Home Screen
The genie Advanced Home dashboard presents status information. The content is the same 
as what is on the Router Status screen available from the Administration menu. The genie 
Advanced Home screen is shown in the following figure:
This screen is 
also displayed 
through the 
Administration  menu.
Setup Wizard
You can use the Setup Wizard to detect your Internet settings and automat\
ically set up your modem router. The Setup Wizard is not the same as the genie screens that display the f\
irst 
time you connect to your modem router to set it up.
To use the Setup Wizard:
1.  Select  Advanced > Setup W
 izard. 
2. Select either  Ye s or No, I want to configure the router myself . 
If you select No, you are taken to the Internet Setup screen (see Internet Setup on 
page   23). 
3.  Select  Ye
 s and select your location.
4.  Click  Next. 
						

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 N300 Wireless ADSL2+ Modem Router DGN2200v4
The Setup Wizard searches your Internet connection for servers and proto\
cols to 
determine your ISP configuration. The following screen displays:
WPS Wizard
The WPS Wizard helps you add a WPS-capable client device (a wireless de\
vice or computer) to your network. On the client device, either press its WPS b\
utton or locate its 
WPS PIN.
To use the WPS Wizard:
1.  Select  Advanced > WPS W
 izard.
2.  Click  Next. 
The following screen lets you select the method for adding the WPS clien\
t (a wireless  device or computer).
 
You can use either the push button or PIN method. 
3.  Select either Push Button or  PIN Number. 
• T
o use the push button method, either click the WPS button on this screen, or press 
the  WPS button on the side of the modem router. Within 2 minutes, go to the wir\
eless 
client and press its WPS button to join the network without entering a password. 
						

							NETGEAR genie Advanced Home 36
N300 Wireless ADSL2+ Modem Router DGN2200v4 
•
To use the PIN method, select the  PIN Number radio button, enter the client security 
PIN, and click Next.
Within 2 minutes, go to the client device and use its WPS software to jo\
in the network 
without entering a password.
The modem router attempts to add the WPS-capable device. The WPS LED 
on the 
front of the modem router blinks green. When the modem router establishe\
s a WPS 
connection, the LED is solid green, and the modem router WPS screen disp\
lays a 
confirmation message. 
WAN Setup
You can use the WAN Setup screen to specify the ADSL or Ethernet port setting for your  Internet connection, though by default the modem router automatically de\
tects the Internet 
port. The WAN Setup screen also lets you configure a DMZ (demilitarized zone) ser\
ver, 
change the maximum transmit unit (MTU) size, and enable the modem rout\
er to respond to a 
ping on the WAN (Internet) port. 
To view or change the WAN settings:
1.  Select  Advanced > Setup > W
 AN Setup.
2.  Specify the settings for your Internet connection.
The fields in this screen are described in the following section. 
						

							NETGEAR genie Advanced Home 
37  N300 Wireless ADSL2+ Modem Router DGN2200v4
3. Click Apply.
WAN Setup Screen Fields
The following fields are available:
•WAN Preference. By default this field is set to Auto-Detect so that the modem router 
automatically detects if the Internet connection is through the ADSL port or the 
WAN/Ethernet port 4. You can use this field to select Must use DSL WAN or Must use 
Ethernet WAN.
•Use port 4 as. By default, Auto-Detect is selected so that the modem router detects if 
Ethernet port 4 is used as a LAN or WAN port. For example, if you connect a computer to 
Ethernet port 4, then it works as a LAN port. You can select LAN or WAN if you do not 
want to use the auto-detect setting. 
•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 or videoconferencing. Be careful when using this feature because it makes the 
firewall security less effective. See the following section, 
Default DMZ Server.
•Respond to Ping on Internet Port. If you want the modem router to respond to a ping 
from the Internet, select this check box. Use this feature only as a diagnostic tool 
because it allows your modem router to be discovered. Do not select this check box 
unless you have a specific reason.
•Disable IGMP Proxying. The IGPM proxying feature lets a LAN computer receive the 
multicast traffic directed to it from the Internet. Selecting this check box prevents this from 
occurring.
•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. You should change the setting in this 
field only if you are sure that it is necessary for your ISP connection. See 
Change the 
MTU Size on page 38.
•NAT Filtering. Network Address Translation (NAT) determines how the modem 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. 
•Disable SIP ALG. The Session Initiation Protocol (SIP) Application Level Gateway (ALG) 
is enabled by default to optimize VoIP phone calls that use the SIP. Select the Disable 
SIP ALG check box to disable the SIP ALG. Disabling the SIP ALG might be useful when 
you are running certain applications. 
						

							NETGEAR genie Advanced Home 
38 N300 Wireless ADSL2+ Modem Router DGN2200v4 
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 modem router recognizes some of these applications and works correctly with 
them, but other applications 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.
The modem router discards traffic from the Internet that is not a response to one of your 
computers or a service that you have set up in the Port Forwarding/Port Triggering screen. 
Instead of discarding this traffic, you can have the modem router forward the traffic to one 
computer on your network. This computer is called the default DMZ server.
To set up a default DMZ server: 
1. Select Advanced > Setup > WAN Setup. screen.
2. Select the Default DMZ Server check box.
3. Type the IP address.
4. Click Apply.
Your changes are saved.
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 a device in the data path has a lower MTU 
setting than the other devices, the data packets are split or “fragmented” to accommodate the 
device with the smallest MTU. 
The best MTU setting for NETGEAR equipment is often just the default value. In some 
situations, changing the value fixes one problem but causes another. Leave the 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 does not open, or displays only part of a web page 
						

							NETGEAR genie Advanced Home 39
 N300 Wireless ADSL2+ Modem Router DGN2200v4
-
Yahoo email
- MSN portal
- America Online’
 s DSL service
• Y
ou use VPN and have severe performance problems.
•Y
ou used a program to optimize MTU for performance reasons, and now you h\
ave 
connectivity or performance problems.
Note: An incorrect MTU setting can cause Internet communication 
problems. For example, you might not be able to access certain 
websites, frames within websites, 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   
MTUApplication
1500 The largest Ethernet packet size. This setting is typical for connections that do not use 
PPPoE or VPN, and is the default value for NETGEAR modem routers, adapte\
rs, 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 > W
 AN Setup. 
2.  In the MTU Size field, enter a value from 64 to 1500.
3.  Click  Apply .
Your change is saved. 
						

							NETGEAR genie Advanced Home 40
N300 Wireless ADSL2+ Modem Router DGN2200v4 
LAN Setup
The LAN Setup screen allows configuration of LAN IP services such as Dyn\
amic Host 
Configuration Protocol (DHCP) and Routing Information Protocol (RIP)\
. 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’s default LAN IP configuration is:
•
LAN IP address. 192.168.0.1
• Subnet mask. 255.255.255.0
These addresses are part of the designated private address range for use\
 in private networks  and are suitable for most applications. 
By default, the modem router acts as a DHCP server. The modem router assigns IP, DNS 
server
 , and default gateway addresses to all computers connected to the LAN. The assigned 
default gateway address is the LAN address of the modem router. The modem router tests 
each address before it is assigned to avoid duplicate addresses on the L\
AN. For most 
applications, the default DHCP and TCP/IP settings of the modem router are satisfactory. 
The modem router delivers the following parameters to any LAN device tha\
t requests DHCP: • IP address
• Subnet mask
• Gateway IP address (the modem router’
 s LAN IP address)
• Primary DNS server (if specified in the Internet Setup screen), otherw\
ise, the modem 
router’

s LAN IP address)
• Secondary DNS server if you entered this in the Internet Setup screen
If you change the LAN IP address of the modem router while connected thr\
ough the browser, 
you are disconnected from the network.
To change the LAN settings:
1.  Select  Advanced > Setup > LAN Setup.