3Com BR-6574N Network Router User Manual


 
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.
If you need to specify the details of every DoS attack, please click
‘Advanced Settings’ button, and the following settings will appear:
The descriptions of every DoS attack is listed below:
Item Name Description
Ping of Death Set the threshold of when this DoS prevention
mechanism will be activated. Please check the