Netgear R6250 Smart Wifi Router Ac1600 User Manual

							Advanced Home Settings 
31  R6250 Smart WiFi Router
•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.
•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. This is rarely required. Reduce the MTU 
only if you are sure that it is necessary for your ISP connection. See 
Change the MTU 
Size on page 32.
•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. 
3. Click Apply.
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. 
						

							Advanced Home Settings 
32 R6250 Smart WiFi Router 
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.
Your change takes effect.
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 instance, 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  
						

							Advanced Home Settings 33
 R6250 Smart WiFi Router
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 routers, adapters, an\
d 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.
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 router is shipped preconfigured to use private IP addresses on the L\
AN side and to act  as a DHCP server
 . The router’s default LAN IP configuration is:
• LAN IP address. 192.168.1.1
• 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. If your network requires a dif
 ferent 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. You will have to open a 
new connection to the new IP address and log in again. 
						

							Advanced Home Settings 34
R6250 Smart WiFi Router 
To change the LAN settings:
1. 
Select  Advanced > Setup > LAN Setup.
2. Enter the settings that you want to customize. 
These settings are described in the following section, LAN Setup Screen Settings .
3.  Click  Apply .
Your changes are saved.
LAN Setup Screen Settings
LAN TCP/IP Setup
• IP Address. The LAN IP address of the router.
• IP Subnet Mask . 
 The LAN subnet mask of the router. Combined with the IP address, the 
IP subnet mask allows a device to know which other addresses are local t\
o it, and which 
have to be reached through a gateway or router.
• RIP Direction. Router Information Protocol (RIP) allows a router to exchange routin\
g 
information with other routers. 

This setting controls how the router sends and receives 
RIP packets. Both is the default setting. With the Both or Out Only sett\
ing, the router 
broadcasts its routing table periodically. With the Both or In Only setting, the router 
incorporates the RIP information that it receives.
• RIP V
ersion. This setting controls the format and the broadcasting method of the RIP \
packets that the router sends. It recognizes both formats when receiving\
. By default, the 
RIP function is disabled. 
- RIP-1 is universally supported. It is adequate for most networks, unless you \
have an 
unusual network setup. 
- RIP-2 carries more information. Both RIP-2B and RIP-2M send the routing data \
in 
RIP-2 format. RIP-2B uses subnet broadcasting. RIP-2M uses multicasting.\
 
						

							Advanced Home Settings 
35  R6250 Smart WiFi Router
Use Router as DHCP Server 
For most home networks, this check box is selected so that the router acts as a Dynamic 
Host Configuration Protocol (DHCP) server. 
•Starting IP Address. Specify the start of the range for the pool of IP addresses in the 
same subnet as the router.
•Ending IP Address. Specify the end of the range for the pool of IP addresses in the 
same subnet as the router.
Address Reservation
When you specify a reserved IP address for a computer on the LAN, that computer receives 
the same IP address each time it accesses the router’s DHCP server. Assign reserved IP 
addresses to servers that require permanent IP settings. 
The Role of the Router as a DHCP Server
By default, the router acts as a DHCP server. The 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 router. The router assigns IP addresses to the attached 
computers from a pool of addresses specified in this screen. Each pool address is tested 
before it is assigned to avoid duplicate addresses on the LAN. For most applications, the 
default DHCP and TCP/IP settings of the router are satisfactory. 
You can specify the pool of IP addresses that the router assigns by setting the starting IP 
address and ending IP address. These addresses should be part of the same IP address 
subnet as the router’s LAN IP address. Using the default addressing scheme, define a range 
between 192.168.1.2 and 192.168.1.254, although you might want to save part of the range 
for devices with fixed addresses.
The router delivers the following parameters to any LAN device that requests DHCP:
•An IP address from the range that you have defined
•Subnet mask
•Gateway IP address (the router’s LAN IP address)
•DNS server IP address (the router’s LAN IP address)
You can use another device on your network as the DHCP server, or specify the network 
settings of all of your computers
To use disable the DHCP Server feature in the router:
1. Select Advanced > Setup > LAN Setup.
2. Clear the Use Router as DHCP Server check box.
3. Click Apply.
4. (Optional) If this service is disabled and no other DHCP server is on your network, set your 
computer IP addresses manually so that the can access the router. 
						

							Advanced Home Settings 
36 R6250 Smart WiFi Router 
Address Reservation
When you specify a reserved IP address for a computer on the LAN, that computer always 
receives the same IP address each time it accesses the router’s DHCP server. Assign 
reserved IP addresses to computers or servers that require permanent IP settings. 
To reserve an IP address: 
1. Select Advanced > Setup > LAN Setup.
2. In the Address Reservation section of the screen, click the Add button. 
3. In the IP Address field, type the IP address to assign to the computer or server. 
Choose an IP address from the router’s LAN subnet, such as 192.168.1.x. 
4. Type the MAC address of the computer or server.
Tip:If the computer is already on your network, you can copy its MAC 
address from the Attached Devices screen and paste it here.
5. Click Apply.
The reserved address is entered into the table. 
The reserved address is not assigned until the next time the computer contacts the router’s 
DHCP server. Reboot the computer, or access its IP configuration and force a DHCP release 
and renew.
To edit or delete a reserved address entry:
1. Select the radio button next to the reserved address you want to edit or delete. 
2. Click Edit or Delete.
WPS Wizard for WiFi Connections
The WPS Wizard helps you add a wireless computer or device to your WiFi network. On the 
computer or wireless device, either press its WPS button or locate its WPS PIN.
1. Select Advanced > WPS Wizard.
2. Click Next.  
						

							Advanced Home Settings 37
 R6250 Smart WiFi Router
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 router. Within 2 minutes, go to the wireless \
client 
and press its WPS button to join the network without entering a password.
• T
o 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 router attempts to add the WPS-capable device. The WPS LED 
on the front of 
the router blinks green. When the router establishes a WPS connection, t\
he LED is solid 
green, and the router WPS screen displays a confirmation message. 
Quality of Service (QoS) Setup
QoS is an advanced feature that can be used to prioritize some types of \
traffic ahead of 
others. The router can provide QoS prioritization over the wireless link and on \
the Internet 
connection. 
WMM QoS for Wireless Multimedia Applications
The router supports Wi-Fi Multimedia Quality of Service (WMM QoS) to p\
rioritize wireless  voice and video traffic over the wireless link. WMM QoS provides prioritization of wireless \
data packets from different applications based on four access categories: voice, video, best \
effort, and background. For an application to receive the benefits of WMM \
QoS, both it and  
						

							Advanced Home Settings 38
R6250 Smart WiFi Router 
the client running that application have to have WMM enabled. Legacy app\
lications that do 
not support WMM and applications that do not require QoS, are assigned t\
o the best effort 
category, which receives a lower priority than voice and video. WMM QoS is enabl\
ed by 
default.
To disable WMM QoS: 
1. 
Select  Advanced > Setup > QoS Setup . 
2. Clear the Enable WMM check box
3.  Click  Apply .
Optimize Internet Gaming with Upstream QoS
Upstream Quality of Service (QoS) assigns high priority to Internet tr\
affic from your Xbox 
gaming system
NETGEAR recommends that only gamers enable the Upstream QoS feature. If \
you do not 
game and you turn on this feature, some applications might not perform a\
s well as usual.
To enable upstream QoS:
1.Launch an Internet browser from a computer or wireless device that is co\
nnected to the 
network.
2. T
ype  http://www.routerlogin.net  or http://www.routerlogin.com .
A login screen displays.
3. Enter the router user name and password.
The user name is  admin. 
 The default password is password . The user name and 
password are case-sensitive.
The BASIC Home screen displays.
4. Select  ADV
 ANCED > Setup > QoS Setup. 
						

							Advanced Home Settings 39
 R6250 Smart WiFi Router
The QoS Setup screen displays:
5.
Select the Enable Upstream QoS (Optimized for Gaming) check box.
6. Specify the maximum uplink bandwidth for your Internet connection:
• If you know what your uplink bandwidth is, type it in the  Uplink bandwidth Maximum 
field and select either Kbps or Mbps from the drop-down list.
• If you are not sure, click the Speedtest button.
Speedtest verifies the upstream speed of your Internet connection. The  Uplink 
bandwidth Maximum field displays the result of the test.
7. Click the  Apply button.
The router assigns a high priority to Internet traffic from your gaming devices to the  Internet.
Set Up QoS for Internet Access
You can give prioritized Internet access to the following types of traffic:
• Specific applications
• Specific online games
• Individual Ethernet LAN ports of the router
• A specific device by MAC address
To specify prioritization of traffic, create a policy for the type of traffic and add the policy to the  QoS Policy table in the QoS Setup screen. For convenience, the QoS Polic\
y table lists many 
common applications and online games that can benefit from QoS handling.\
QoS for Applications and Online Gaming
To create a QoS policy for applications and online games:
1.  Select  Advanced > Setup > QoS Setup.
2.  Click the  Setup QoS rule  button. 
						

							Advanced Home Settings 40
R6250 Smart WiFi Router 
The QoS Priority Rule list displays. 
You can edit or delete a rule by selecting its radio button and clicking \
either the Edit or 
Delete button. You can also delete all the rules by clicking the  Delete All button.
3.  T
o add a priority rule, scroll down to the bottom of the QoS Setup screen\
 and click  Add 
Priority Rule.
4.  In the QoS Policy for field, type the name of the application or game.
5.  In the Priority Category list, select either  Applications or Online Gaming. 
A list of applications or games displays.
6.  Scroll and select  Add a New 
 Application, or Add a New Game, as applicable. 
7.  If prompted, in the Connection 
 Type list, select either TCP, UDP, or both (TCP/UDP). Specify 
the port number or range of port numbers that the application or game us\
es.