Netgear R6900 Nighthawk Ac1900 Smart Wifi Router User Manual

							10
Manage the WAN and LAN Network Settings
This chapter describes how you can manage the WAN and LAN network settings of the router.
The chapter includes the f
ollowing sections:
• Manage the WAN Security Settings
 on page 142
• Set Up a Def
ault DMZ Server on page 
142
• Manage IGMP Proxying on page 
143
• Manage NAT Filtering
 on page 144
• Manage the SIP Application-Le
vel Gateway on page 
144
• Manage the LAN IP Address Settings
 on page 145
• Manage the Router Information Protocol Settings
 on page 146
• Manage the DHCP Ser
ver Address Pool
 on page 147
• Manage Reser
ved LAN IP Addresses
 on page 148
• Disab
le the Built-In DHCP Server
 on page 150
• Change the Router’s Device Name
 on page 151
• Set Up and Manage Custom Static Routes on page 
152
• Set Up a Bridge for a Port Group or VLAN Tag Group on page 
155 141 
						

							Manage the WAN Security Settings
The WAN security settings include port scan protection and denial of service (DoS) protection, which can protect
your LAN against attacks such as Syn flood, Smurf Attack, Ping of Death, and many others. By default, DoS protection
is enabled and a port scan is rejected.
You can also enable the router to respond to a ping to its WAN (Internet) port. This feature allows your router to be
discovered. Enable this feature only as a diagnostic tool or if a specific reason exists.To change the default WAN security settings: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter http://www.routerlogin.net.
A login window opens.
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 page displays.
4. Select 
ADVANCED > Setup > WAN Setup.
The 
WAN Setup page displays.
5. To enable a port scan and disable DoS protection, select the 
Disable Port Scan and DoS Protection check
bo
x.
6. To enable the router to respond to a ping, select the Respond to Ping on Internet Port check box.
7. Clic

k the 
Apply button.
Your settings 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.
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. Manage the WAN and LAN Network Settings
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							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 or application for which you set up a port forwarding or port triggering rule. Instead of discarding
this traffic, you can direct the router to 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.
A login window opens.
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 page displays.
4. Select ADVANCED > Setup > WAN Setup.
The 

WAN Setup page displays.
5. Select the 
Default DMZ Server check box.
6. Enter the IP address of the server.
7. Click the 
Apply button.
Your settings are saved.
Manage 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, leave it disabled, which is the default setting.To enable IGMP proxying: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter 
http://www.routerlogin.net
A login window opens.
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 page displays.
4. Select ADVANCED > Setup > WAN Setup.
The 

WAN Setup page displays. Manage the WAN and LAN Network Settings
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							5.
Clear the Disable IGMP Proxying check box.
By default, the 
Disable IGMP Proxying check box is selected and IGMP proxying is disabled.
6. Clic
k the Apply button.
Y

our settings are saved.
Manage NAT Filtering Network Address Translation (NAT) determines how the router processes inbound traffic. Secured NAT protects
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 much less secured firewall but allows
almost all Internet applications to work. Secured NAT is the default setting.To change the default NAT filtering settings: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter 
http://www.routerlogin.net.
A login window opens.
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 page displays.
4. Select 
ADVANCED > Setup > WAN Setup.
The 
WAN Setup page displays.
5. Select a NAT Filtering radio button:
•Secured
. 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
. Provides a much less secured firewall but allows almost all Internet applications to function.
6. Click the 
Apply button.
Your settings are saved.
Manage the SIP Application-Level Gateway The application-level gateway (ALG) for the Session Initiation Protocol (SIP) is enabled by default for enhanced
address and port translation. However, some types of VoIP and video traffic might not work well when the SIP ALG
is enabled. For this reason, the router provides the option to disable the SIP ALG. Manage the WAN and LAN Network Settings
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							To change the default SIP ALG setting:
1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter http://www.routerlogin.net.
A login window opens.
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 page displays.
4. Select 
ADVANCED > Setup > WAN Setup.
The 
WAN Setup page displays.
5. To disable the SIP ALG, select the Disable SIP ALG check box.
The SIP ALG is enab

led by default.
6. Click the 
Apply button.
Your settings are saved.
Manage the LAN IP Address 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 (this is the same as www.routerlogin.net)
• 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. 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. 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 competing subnets use the same IP scheme. To change the LAN IP address settings: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter 
http://www.routerlogin.net.
A login window opens.
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 page displays. Manage the WAN and LAN Network Settings
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							4.
Select ADVANCED > Setup > LAN Setup. 5.
In the 
IP Address field, enter the LAN IP address for the router.
6. In the 
IP Subnet Mask, enter the LAN subnet mask for the router.
7. Clic
k the 
Apply button.
Your settings are saved.
If you changed the LAN IP address of the 
router, you are disconnected when the changes take effect.
To reconnect, close your browser, relaunch it, and log in to the 
router at its new LAN IP address.
Manage the Router Information Protocol Settings Router Information Protocol (RIP) lets the router exchange routing information with other routers. By default, RIP is
enabled in both directions (in and out) without a particular RIP version.To manage the RIP settings: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter 
http://www.routerlogin.net.
A login window opens.
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 page displays. Manage the WAN and LAN Network Settings
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							4.
Select ADVANCED > Setup > LAN Setup.
The LAN Setup page displays.
5. From the 
RIP Direction menu, select an RIP direction:
• Both
. The router broadcasts its routing table periodically and incorporates information that it receives. This
is the default setting.
• Out Only
. The router broadcasts its routing table periodically but does not incorporate the RIP information
that it receives.
• In Only
. The router incorporates the RIP information that it receives but does not broadcast its routing table.
6. From the 
RIP Version menu, select an RIP version:
• Disabled
. The RIP version is disabled. This is the default setting.
• RIP-1
. This format is universally supported. It is adequate for most networks, unless you are using 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 uses multicasting.
7. Click the 
Apply button.
Your settings are saved.
Manage the DHCP Server Address Pool By default, the router acts as a Dynamic Host Configuration Protocol (DHCP) server. The router assigns IP, DNS
ser

ver, and default gateway addresses to all computers that are connected to its LAN and WiFi network. The assigned
default gateway address is the LAN address of the 
router.
These addresses m
ust be part of the same IP address subnet as the router
’s LAN IP address. The default DHCP
address pool is 192.168.1.2–192.168.1.254.
The 
router delivers the following parameters to any LAN device that requests DHCP:
• An IP address from the range that you define
• Subnet mask
• Gateway IP address (the router
’s LAN IP address)
• DNS server IP address (the 
router’s LAN IP address)
T
o 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.
A login window opens.
3. Enter the 
router user name and password. Manage the WAN and LAN Network Settings
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Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							The user name is admin. The default password is password. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select ADVANCED > Setup > LAN Setup. 5.
Make sure that the Use Router as DHCP Server check box is selected.
This chec

k box is selected by default.
6. Specify the range of IP addresses that the router assigns:
• In the Starting IP Address field, enter the lowest number in the range.
This IP address m

ust be in the same subnet as the router. By default, the starting IP address is 192.168.1.2.
• In the 
Ending IP Address field, enter the number at the end of the range of IP addresses.
This IP address must be in the same subnet as the router. By default, the ending IP address is 192.168.1.254.
7. Click the 
Apply button.
Your settings are saved.
Manage Reserved LAN IP Addresses 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. Manage the WAN and LAN Network Settings
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							Reserve a LAN IP Address
You can assign a reserved IP address to a computer or server that requires permanent IP settings.
To reserve an IP address: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter http://www.routerlogin.net.
A login window opens.
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 page displays.
4. Select 
ADVANCED > Setup > LAN Setup.
The LAN Setup page displays.
5. In the Address Reservation section, click the 
Add button.
6. Either select a device from the Address Reservation Table by selecting the corresponding radio button or specify
the reserved IP address information:
•In the IP Address field, enter the IP address to assign to the computer or device.
Choose an IP address from the router’
 s LAN subnet, such as 192.168.1.x.
• In the 
MAC Address field, enter the MAC address of the computer or device.
• In the Device Name
 field, enter the name of the computer or device.
7. Click the 
Add button.
The reser
ved address is entered into the table on the LAN Setup page.
The reserved address is not assigned until the next time the computer or device contacts the router’s DHCP
server. Reboot the computer or device, or access its IP configuration and force a DHCP release and renew.
Change a Reserved IP Address
You can change a reserved IP address entry. To change a reserved IP address entry: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter 
http://www.routerlogin.net.
A login window opens.
3. Enter the router user name and password. Manage the WAN and LAN Network Settings
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							The user name is admin. The default password is password. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select ADVANCED > Setup > LAN Setup.
The LAN Setup page displays.
5. In the Address Reservation section, select the radio button next to the reserved address.
6. Click the 
Edit button.
The Edit page displays.
7. Change the settings.
8. Click the 
Apply button.
Your settings are saved.
Remove a Reserved IP Address Entry
You can remove a reserved IP address entry. To remove a reserved IP address entry: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter 
http://www.routerlogin.net.
A login window opens.
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 page displays.
4. Select 
ADVANCED > Setup > LAN Setup.
The LAN Setup page displays.
5. In the Address Reservation section, select the radio button next to the reserved address.
6. Click the 
Delete button.
The address entr y is removed.
Disable the Built-In DHCP Server By default, the router functions as a DHCP server. The router assigns IP, DNS server, and default gateway addresses
to all devices connected to the LAN. The assigned default gateway address is the LAN address of the router. Manage the WAN and LAN Network Settings
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