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3-3-3 DoS Attack Prevention
Denial of Service (DoS) is a common attack measure, by transmitting a great
amount of data or request to your Internet IP address and server, the Internet
connection will become very slow, and server may stop responding because
it is not capable to handle too much traffics.
This router has a built-in DoS attack prevention mechanism; when you
activate it, the router will stop the DoS attack for you.
Please follow the following instructions to set DoS prevention parameters:
Please click ‘Firewall’ menu on the left of web management interface, then
click ‘DoS’, and the following message will be displayed on your web
browser:
Ping of Death (1):
Ping of Death is a special packet, and it will cause
certain computer to stop responding. Check this box
and the router will filter this kind of packet out.
Discard Ping
Ping is a common and useful tool to know
From WAN (2):
the connection status of a specified remote network
device, but some malicious intruder will try to fill your
network bandwidth with a lot of PING request data
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packet, to make your internet connection become very
slow, even unusable. Check this box and the router will
ignore all inbound PING request, but when you
activate this function, you will not be able to ping your
own router from internet, too.
Port Scan (3):
Some malicious intruder will try to use a ‘port scanner’
to know how many ports of your Internet IP address
are open, and they can collect a lot of valuable
information by doing so. Check this box and the router
will block all traffics which are trying to scan your
Internet IP address.
Sync Flood (4):
This is another kind of attack, which uses a lot of fake
connection request to consume the memory of your
server, and try to make your server become unusable.
Check this box and the router will filter this kind of
traffic out.
If you want to reset all settings in this page back to previously-saved value,
please click ‘Cancel’ button.
After you finish with all settings, please click ‘Apply’ (5) button and the
following message will be displayed on your web browser:
Press ‘Go Back’ to save the settings made and go back to web management
interface; press ‘Apply’ to save the settings made and restart the router so the
settings will take effect after it reboots.
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3-3-4 Demilitarized Zone (DMZ)
Demilitarized Zone (DMZ) refers to a special area in your local network.
This area resides in local network, and all computers in this area uses private
IP address, too. But these private IP addresses are mapped to a certain
Internet IP address, so other people on Internet can fully access those
computers in DMZ.
Please follow the following instructions to set DMZ parameters:
Please click ‘Firewall’ menu on the left of web management interface, then
click ‘DMZ’, and the following message will be displayed on your web
browser:
Enable DMZ (1):
Check this box to enable DMZ function, uncheck this
box to disable DMZ function.
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Public IP
You can select ‘Dynamic IP’ or ‘Static IP’ here.
address (2):
If you select ‘Dynamic IP’, you have to select an
Internet connection session from dropdown menu; if
you select ‘Static IP’, please input the IP address that
you want to map to a specific private IP address.
Client PC IP
Please input the private IP address that the
address (3):
Internet IP address will be mapped to.
Computer Name (4): Pull down the menu and all the computers connected
to the router will be listed here. You can easily to select
the computer name without checking the IP address of
the computer.
Add (5):
Click ‘Add’ button to add the public IP address and
associated private IP address to the DMZ table.
Reset (6):
Click ‘Clear’ to remove the value you inputted in
Public IP address and Client PC IP address field.
Current
All existing public IP address and private IP
DMZ Table (7):
address mapping will be displayed here.
Delete (8):
If you want to delete a specific DMZ entry, check
the ‘select’ box of the DMZ entry you want to delete,
then click ‘Delete Selected’ button. (You can select
more than one DMZ entries).
Delete All (9):
If you want to delete all DMZ entries listed here,
please click ‘Delete All’ button.
Reset (10):
You can also click ‘Reset’ button to unselect all DMZ
entries.
If you want to reset all settings in this page back to previously-saved value,
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please click ‘Cancel’ button.
After you finish with all settings, please click ‘Apply’ (11) button and the
following message will be displayed on your web browser:
Press ‘Go Back’ to save the settings made and go back to web management
interface; press ‘Apply’ to save the settings made and restart the router so the
settings will take effect after it reboots.

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