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Page 141 / 248 Scroll up to view Page 136 - 140
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
.
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 box.
6.
To enable the router to respond to a ping, select the
Respond to Ping on Internet Port
check box.
7.
Click 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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Nighthawk AC1900 Smart WiFi Router Model R6900
Page 142 / 248
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
.
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
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
.
Manage the WAN and LAN Network Settings
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Nighthawk AC1900 Smart WiFi Router Model R6900
Page 143 / 248
The WAN Setup page displays.
5.
Clear the
Disable IGMP Proxying
check box.
By default, the
Disable IGMP Proxying
check box is selected and IGMP proxying is disabled.
6.
Click the
Apply
button.
Your 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
.
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.
Manage the WAN and LAN Network Settings
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Nighthawk AC1900 Smart WiFi Router Model R6900
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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.
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
.
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 enabled 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
specific 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.
Manage the WAN and LAN Network Settings
144
Nighthawk AC1900 Smart WiFi Router Model R6900
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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
.
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
.
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.
Click 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.
Manage the WAN and LAN Network Settings
145
Nighthawk AC1900 Smart WiFi Router Model R6900

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