Draytek vigor2960 series User Manual page 205

Item
Block Fraggle
Block Tear Drop
Block Ping of Death
Block ICMP Fragment
Block Unknown
Protocol
Apply
Cancel
After finished the above settings, click Apply to save the configuration.
Vigor2960 Series User's Guide
Description
Click Enable to activate the Block fraggle Attack function.
Any broadcast UDP packets received from the Internet are
blocked.
Click Enable to activate the Block Tear Drop function. This
attack involves the perpetrator sending overlapping packets
to the target hosts so that target host will hang once they
re-construct the packets. The routers will block any packets
resembling this attacking activity.
Click Enable to activate the Block Ping of Death function.
Many machines may crash when receiving an ICMP
datagram that exceeds the maximum length. The router will
block any fragmented ICMP packets with a length greater
than 1024 octets.
Click Enable to activate the Block ICMP fragment function.
Any ICMP packets with fragmented bit sets are dropped.
Click Enable to activate the Block Unknown Protocol
function. The router will block any packets with unknown
protocol types.
Click it to save the configuration.
Click it to discard the settings configured in this page.
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