Edimax BR-6524n Manual page 129

Discard Ping From
WAN
Port Scan
Sync Flood
When you finished with the settings in this page, you can click 'Apply'
button to save changes you made in this page, or you can click 'Cancel'
to discard changes. After you click 'Apply' button, you'll see the
following messages:
Please click 'Apply' to save changes you made and restart the broadband
router, this requires about 30 seconds and the broadband router will stop
responding (this is normal and is not malfunction). You can reconnect to
this broadband router and continue on other settings later.
box of Ping of Death, and input the frequency
of threshold (how many packets per second,
minute, or hour), you can also input the 'Burst'
value, which means when this number of 'Ping
of Death' packet is received in very short time,
this DoS prevention mechanism will be
activated.
Check the box to activate this DoS prevention
mechanism.
Many kind of port scan methods are listed here,
please check one or more DoS attack methods
you want to prevent.
Like Ping of Death, you can set the threshold
of when this DoS prevention mechanism will be
activated.