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Page 31 / 131 Scroll up to view Page 26 - 30
ADVANCED Home Settings
31
R6200v2 Smart WiFi Router
NETGEAR genie Advanced Home Screen
The genie Advanced Home screen presents status information. The content is the same as
what is on the Router Status screen available from the Administration menu. See
View
Router Status
on page
82.
Internet Connection Setup Wizard
You can use the Setup Wizard to detect your Internet settings and automatically set up your
router. The Setup Wizard is not the same as the genie screens that display the first time you
connect to your router to set it up.
To use the Setup Wizard:
1.
Select
ADVANCED > Setup Wizard
.
2.
Select the
Yes
button.
If you select No, you are taken to the Internet Setup screen (see
Internet Setup
on
page
20).
3.
Click the
Next
button.
Page 32 / 131
ADVANCED Home Settings
32
R6200v2 Smart WiFi Router
The Setup Wizard searches your Internet connection for servers and protocols to
determine your ISP configuration.
WAN Setup
The WAN Setup screen lets you configure advanced settings for the Internet port.
To view or change the WAN settings:
1.
Select
ADVANCED > Setup > WAN Setup
.
2.
Specify the following settings:
•
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 it makes the
firewall security less effective. See the following section,
Default DMZ Server
.
•
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 setting 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.
Page 33 / 131
ADVANCED Home Settings
33
R6200v2 Smart WiFi Router
•
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. If you do not
need this feature, you can select this check box to disable 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. Reduce the MTU only if you are sure that it
is necessary for your ISP connection. See
Change the MTU Size
on page
34.
•
NAT Filtering
. Network Address Translation (NAT) determines how the router
processes inbound traffic. Secured NAT provides a 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 working. Open NAT
provides a less secure firewall, but allows almost all Internet applications to work.
3.
Click the
Apply
button.
Your changes are saved.
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 other applications might not function well. In some cases, one local
computer can run the application correctly if the IP address for that computer 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 router usually detects and discards incoming traffic from the Internet that is not 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 the 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
.
2.
Select the
Default DMZ Server
check box.
3.
Type the IP address.
4.
Click the
Apply
button.
Your change takes effect.
Page 34 / 131
ADVANCED Home Settings
34
R6200v2 Smart WiFi Router
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 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. 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
-
Yahoo email
-
MSN portal
-
America Online’s DSL service
•
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. 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
MTU
Application
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 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.
Page 35 / 131
ADVANCED Home Settings
35
R6200v2 Smart WiFi Router
To change the MTU size:
1.
Select
ADVANCED > Setup > WAN Setup
.
2.
In the MTU Size field, enter a value from 64 to 1500.
3.
Click the
Apply
button.
Your change is saved.
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 router is shipped preconfigured to use private IP addresses on the LAN side and to act
as a DHCP server. The router’s default LAN IP configuration is:
•
LAN IP address
•
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. If your network requires a different IP addressing
scheme, you can change these settings in the LAN Setup screen.
Note:
If you change the LAN IP address of the router while connected
through the browser, you are disconnected. If you want to continue
to use the router menus, open a new connection to the new IP
address and log in again.
1436
Used in PPTP environments or with VPN.
1400
Maximum size for AOL DSL.
576
Typical value to connect to dial-up ISPs.
Table 2.
Common MTU sizes
(continued)
MTU
Application

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