Netgear D6200 Wifi Dsl Modem Router User Manual

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 D6200 WiFi DSL Modem Router
The Setup Wizard searches your Internet connection for servers and proto\
cols to 
determine your ISP configuration. 
5.  To transfer to the Internet, click Take me to the Internet.
To print a copy of your Internet configuration, click Print this. 
						

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D6200 WiFi DSL Modem Router 
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, you have to either pre\
ss its WPS button or 
locate its WPS PIN.
To use the WPS Wizard:
1.  Select  ADV
 ANCED > WPS Wizard. 
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 WiFi DSL modem router. Within 2 minutes, go t\
o 
the wireless client and press its WPS  button to join the network without entering a 
password. 
						

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 D6200 WiFi DSL Modem Router
•
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 WiFi DSL modem router attempts to add the WPS-capable device. The WPS LED on  the side of the WiFi DSL modem router blinks green. When the WiFi DSL mo\
dem router 
establishes a WPS connection, the LED is solid green, and the WiFi DSL m\
odem router 
WPS screen displays a confirmation message. 
4.  Repeat Step 2 and Step 3 to add another WPS client to your network.
VPN Wizard
The Wizard asks you series of questions that determine the IPSec keys an\
d VPN policies it 
sets up. The VPN Wizard sets the parameters for the network connection, security \
association, traffic selectors, authentication algorithm, and encryption. These parameters are 
based on the VPNC recommendations. More information about the VPNC recom\
mendations 
is presented in the VPN Wizard summary page.
To use the VPN Wizard:
1.  Select  ADV
 ANCED > VPN Wizard.   
						

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D6200 WiFi DSL Modem Router 
2. 
Click  Next.
Enter the requested information:
•Connection name. Enter an appropriate name for the connection. 
 This name is not 
supplied to the remote VPN endpoint. Rather, it is used to help you manage the VPN 
settings.
• Pre-shared key . 
 The key has to be entered both here and on the remote VPN 
gateway or the remote VPN client. This method does not require using a CA 
(certificate authority).
• VPN tunnel connection. 
 The wizard has to know if you are planning to connect to a 
remote gateway or setting up the connection for a remote client or compu\
ter to 
establish a secure connection to this device.
3.  Click  Next. 
Enter the remote IP address of the gateway you want to connect to, or pr\
ovide the 
Internet name of the gateway. The Internet name is the fully qualified domain name, as 
set up in a Dynamic DNS service.
4.  Click  Next. 
Enter the remote LAN IP address and subnet mask of the remote gateway.
•If this information does not match the LAN IP address and subnet mask in\
 the remote 
gateway

, the secure tunnel fails to connect.
• The IP address range used on the remote LAN has to be dif
 ferent from the IP address 
range used on the local LAN. 
						

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 D6200 WiFi DSL Modem Router
5. 
Click  Next. 
This screen shows the summary of the Wizard configuration with a link to\
 view the VPNC 
recommended parameters (click the here link to view the VPNC-recommended 
parameters).
6.  Click  Done. 
For information about how to add or modify VPN policies, see VPN Policies on page  130.
Setup Menu
Select ADVANCED > Setup to display the Setup menu.
The following selections are available: • Internet Setup . 
 This selection is a shortcut to the same Internet Setup screen that you \
can access from the dashboard on the BASIC Home screen. See  Internet Basic Settings 
on page   29.
• ADSL Setup . Internet (ADSL) setup. See ADSL Setup  on page
  46.
• W
ireless Setup . This selection is a shortcut to the same Wireless Settings screen that 
you can access from the dashboard on the BASIC Home screen. See Basic Wireless 
Settings  on page
  32.
• W
AN Setup. Internet (WAN) setup. See  WAN Setup on page 47.
• LAN Setup. Local area network (LAN) setup. See  LAN Setup on page 50.
• QoS Setup . Quality of Service (QoS) setup. See Quality of Service Setup  on page
  54. 
						

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D6200 WiFi DSL Modem Router 
•
Guest Network. This selection is a shortcut to the same Wireless Settings (for guest 
networks) screen that you can access from the dashboard on the BASIC Ho\
me screen. 
See Guest Networks on page  36. 
ADSL Setup
The ADSL Settings screen lets you configure the multiplexing method and \
virtual circuit of 
your ADSL connection. The default parameters should match those on the system used by 
your ISP. 
To configure ADSL:
1.  Select  ADV
 ANCED > Setup > ADSL Settings.
2. Configure the following settings:
• Multiplexing Method. 
 Your ISP indicates whether your multiplexing method is 
VC-BASED or LLC-BASED.
• VPI, VCI. 
 Your ISP indicates which VPI and VCI combination is used for your service\
.
• DSL Mode. 
 Your ISP indicates that the best setting is used for your DSL connection.\
3.  Click  Apply . 
						

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 D6200 WiFi DSL Modem Router
WAN Setup
The WAN Setup screen lets you configure the WAN (Internet) port. 
To configure the WAN:
1. 
Select  ADV
 ANCED > Setup > WAN Setup .
2. Configure the following settings:
• W
AN Preference . Select your WAN preference: Auto Detect, Must use DSL WAN, or 
Must use Ethernet WAN.
• 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  feature 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 i\
t makes the 
firewall security less effective. For more information, see  Default DMZ Server on 
page   48.
• Respond to Ping on Internet Port. If you want the WiFi DSL modem router to 
respond to a ping from the Internet, select this check box. Use this fea\
ture only as a 
diagnostic tool because it allows your WiFi DSL modem router to be disco\
vered. Do 
not select this check box unless you have a specific reason.
• MTU Size (in bytes). 
 The normal MTU (maximum transmit unit) value for most 
Ethernet networks is 1500 bytes, or 1492 bytes for PPPoE connections. Fo\
r some 
ISPs, you might need to reduce the MTU. This change is rarely required, and should 
not be done unless you are sure that it is necessary for your ISP connec\
tion. See 
Change the MTU Size on page  48. 
						

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48 D6200 WiFi DSL Modem Router 
•NAT Filtering. Network Address Translation (NAT) determines how the WiFi DSL 
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. Some VoIP applications do not work well with the SIP ALG. 
Selecting this check box to turn off the SIP ALG might help your VoIP devices to 
create or accept a call through the router.
3. Click Apply.
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 WiFi DSL modem router is programmed to recognize some of these applications 
and to work 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.
Incoming traffic from the Internet is discarded by the WiFi DSL modem 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 forward 
it 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.
2. Select the Default DMZ Server check box.
3. Type the IP address.
4. 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  
						

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 D6200 WiFi DSL Modem Router
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 val\
ue, and changing  the value might fix one problem but cause another
 . Leave the MTU unchanged unless one of 
these situations occurs:
• Y
ou have problems connecting to your ISP or other Internet service, and t\
he 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\
- Y
ahoo 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 
such as the inability 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 8.  Common MTU sizes   
MTUApplication
1500 The largest Ethernet packet size. This is the typical setting for non-PPPoE, non-VPN 
connections, and is the default value for NETGEAR WiFi DSL modem 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.
  
						

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To change the MTU size:
1. Select ADVANCED > Setup > WAN Setup. 
2. In the MTU Size field, enter a new size from 64 through 1500.
3. Click Apply.
LAN Setup
The LAN Setup screen allows configuration of LAN IP services such as Dynamic Host 
Configuration Protocol (DHCP) and Routing Information Protocol (RIP).
The WiFi DSL modem router is shipped preconfigured to use private IP addresses on the 
LAN side and to act as a DHCP server. The WiFi DSL 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 should be suitable for most applications. If your network requires a different IP 
addressing scheme, make changes in the LAN Setup screen.
Note:If you change the LAN IP address of the WiFi DSL modem router 
while connected through the browser, you are disconnected. You 
have to open a new connection to the new IP address and log in 
again.