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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: 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 From WAN: Ping is a common and useful tool to know 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.
Port Scan: 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: 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.
Advanced Settings: Click this button and you can set advanced settings
of the DoS prevention method listed above, please see section 3-3-3-1
“DoS – Advanced Settings” below.
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