Netgear R6050 Ac750 Dual Band Wifi Gigabit Router User Manual

							31
4
4.   Specify Network Settings
This chapter includes the following sections:
•View or Change WAN Settings 
•Set Up a Default DMZ Server 
•Change the MTU Size 
•Change the Router’s Device Name 
•Change the LAN TCP/IP Settings 
•Specify the IP Addresses That the Router Assigns 
•Disable the DHCP Server Feature in the Router 
•Reserve LAN IP Addresses 
•Use the WPS Wizard for WiFi Connections 
•Specify WPS Settings 
•Use the Router as a Wireless Access Point 
•Wireless Distribution System 
•Set Up Dynamic DNS 
•Static Routes 
•View Devices Currently on the Network  
						

							Specify Network Settings 32
AC750 Wireless Dual Band Gigabit Router R6050 
View or Change WAN Settings
You can view or configure wide area network (WAN) settings for the Internet port. You can 
set up a DMZ (demilitarized zone) server, change the maximum transmit unit (MTU) size, and 
enable the router to respond to a ping to its WAN (Internet) port. 
To view or change the WAN settings:
1.  Launch a web browser from a computer or WiFi device that is connected to\
 the network.
2.  Enter  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 
ADVANCED > Setup > WAN Setup.
The following settings display: • 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, and many 
others. Select this check box only in special circumstances. 
• Default DMZ Server . 
 This feature is sometimes helpful when you are playing online 
games or videoconferencing, but it makes the firewall security less effective. See  Set 
Up a Default DMZ Server on page  33.
• Respond to Ping on Internet Port . 
 This feature allows your router to be discovered. 
Use this feature only as a diagnostic tool or if you have a specific rea\
son. 
• MTU Size (in bytes). 
 The normal MTU (maximum transmit unit) value for most 
Ethernet networks is 1500 bytes, or 1492 bytes for PPPoE connections. Ch\
ange the 
MTU only if you are sure that it is necessary for your ISP connection. S\
ee Change the 
MTU Size on page  35. 
						

							Specify Network Settings 
33  AC750 Wireless Dual Band Gigabit Router R6050
•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. By default, 
the Secured radio button is selected.
-Open NAT provides a much less secured firewall, but allows almost all Internet 
applications to function.
•Disable SIP ALG. Some Voice over IP (VoIP) applications do not function well with 
the Session Initiation Protocol (SIP) Application Layer Gateway (ALG). Selecting the 
check box to turn off the SIP ALG might enable connected VoIP devices to create and 
accept a VoIP call through the router. By default, this check box is cleared.
•Disable IGMP Proxying. IGMP proxying allows computers on the LAN to receive the 
multicast traffic they are subscribed to from the Internet. By default, this check box is 
selected and the IGMP proxy is disabled, preventing multicast traffic from the Internet 
to the LAN. Clear the Disable IGMP Proxying check box to allow multicast traffic 
from the Internet to the LAN.
•VPN Passthrough. The router supports VPN passthrough for IPSec, PPTP, and 
L2TP.
-IPSec Passthrough. To enable or disable IPSec passthrough, select the Enable 
or Disabled radio button.
-PPTP Passthrough. To enable or disable PPTP passthrough, select the Enable 
or Disabled radio button.
-L2TP Passthrough. To enable or disable L2TP passthrough, select the Enable 
or Disabled radio button. 
5. Change the settings as needed.
6. Click the Apply button.
Your changes are saved.
Set Up a 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. 
						

							Specify Network Settings 34
AC750 Wireless Dual Band Gigabit Router R6050 
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  detects and discards incoming traf
 fic 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.  Launch a web browser from a computer or WiFi device that is connected to\
 the network.
2.  Enter  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 > WAN Setup .
5. Select the  Default DMZ Server check box.
6.  T
ype the IP address.
7.  Click the  Apply button.
Your settings are saved. 
						

							Specify Network Settings 
35  AC750 Wireless Dual Band Gigabit Router R6050
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 must be split or “fragmented” to 
accommodate the device with the smallest MTU. 
The best MTU setting for NETGEAR equipment is often 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 experience 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.
To change the MTU size:
1. Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter 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. 
						

							Specify Network Settings 36
AC750 Wireless Dual Band Gigabit Router R6050 
4. 
Select  ADVANCED > Setup > WAN Setup . 
5. In the MTU Size field, enter a value from 64 to 1500.
6.  Click the  Apply button.
Your change is saved.
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 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.
 
Change the Router’s Device Name
The router’s device name displays in file manager when you browse your network.
To change the router’s device name:
1. Launch a web browser from a computer or WiFi device that is connected to\
 the network. 
						

							Specify Network Settings 37
 AC750 Wireless Dual Band Gigabit Router R6050
2. 
Enter  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 > LAN Setup .
5. In the Device Name field, type a new name.
6.  Click the  Apply button.
Your change is saved.
Change the LAN TCP/IP Settings
The router is 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 as follows:
• 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.
You might want to change these settings if you need a specific IP subnet \
that one or more  devices on the network use, or if you have competing subnets with the sa\
me IP scheme.
To change the LAN TCP/IP settings:
1.  Launch a web browser from a computer or WiFi device that is connected to\
 the network.
2.  Enter  http://www
 .routerlogin.net or http://www.routerlogin.com.
A login screen displays.
3.  Enter the router user name and password. 
						

							Specify Network Settings 38
AC750 Wireless Dual Band Gigabit Router R6050 
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 > LAN Setup .
5. In the IP Address fields, type the IP address.
6.  In the IP Subnet Mask  fields, type the subnet mask of the router. 
The IP address and subnet mask identify which addresses are local to a s\
pecific device  and which must be reached through a gateway or router.
7.  Change the RIP settings.
Router Information Protocol (RIP) allows a router t
 o exchange routing information with 
other routers. 
a. In the RIP Direction list, select one of the following:
- Both. The  router broadcasts its routing table periodically and incorporates 
information that it receives.
- Out Only . The router  broadcasts its routing table periodically
 . 
- In Only . The router  incorporates the RIP information that it receives.
b.  In the RIP V
 ersion list, select one of the following:
- Disabled. 
 This is the default setting. 
- RIP-1. 
This format is universally supported. It is adequate for most networks, \
unless you have an unusual network setup. 
- RIP-2. 
This format carries more information. Both RIP-2B and RIP-2M send the 
routing data in RIP-2 format. RIP-2B uses subnet broadcasting. RIP-2M us\
es 
multicasting.
8.  Click the  Apply button.
Your changes are saved.
If you changed the LAN IP address of the router, you are disconnected wh\
en this change 
takes ef
 fect.
9.  T
o reconnect, close your browser, relaunch it, and log in to the router. 
						

							Specify Network Settings 39
 AC750 Wireless Dual Band Gigabit Router R6050
Specify the IP Addresses That the Router Assigns
By default, the router acts as a Dynamic Host Configuration Protocol (D\
HCP) 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. 
These addresses must 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 can save part of the range for devices with \
fixed addresses.
The router delivers the following parameters to any LAN device that requ\
ests 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)
To specify the pool of IP addresses that the router assigns:
1. Launch a web browser from a computer or WiFi device that is connected to\
 the network.
2.  Enter  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 > LAN Setup .
5. Make sure that the  Use Router as DHCP Server  check box is selected.
6.  Specify the range of IP addresses that the router assigns:
a. In the  Starting IP 
 Address field, type the lowest number in the range.
This IP address must be in the same subnet as the router. 
						

							Specify Network Settings 40
AC750 Wireless Dual Band Gigabit Router R6050 
b. 
In the Ending IP Address  field, type the number at the end of the range of IP 
addresses.
This IP address must be in the same subnet as the router.
7.  Click the  Apply button.
Your settings are saved.
Disable the DHCP Server Feature in the Router
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.
You can use another device on your network as the DHCP server, or specify the network  settings of all your computers.
To disable the DHCP server feature in the router:
1.  Launch a web browser from a computer or WiFi device that is connected to\
 the network.
2.  Enter  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 > LAN Setup .
5. Clear the Use Router as DHCP Server  check box.
6.  Click the  Apply button.
7.  (Optional) If this service is disabled and no other DHCP server is on \
your network, set your 
computer IP addresses manually so that they can access the router.