Edimax Technology Wireless 3G Portable Router 3G-6210n - Manual (Page 130)

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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:
Here are descriptions of every setup items:
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 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.
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