Draytek Vigor2960, User Manual

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Vigor2960 Series User’s Guide 197
Item Description
Block Fraggle Click Enable to activate the Block fraggle Attack function.
Any broadcast UDP packets received from the Internet are
blocked.
Block Tear Drop 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.
Block Ping of Death 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.
Block ICMP Fragment Click Enable to activate the Block ICMP fragment function.
Any ICMP packets with fragmented bit sets are dropped.
Block Unknown
Protocol Click Enable to activate the Block Unknown Protocol
function. The router will block any packets with unknown
protocol types.
Apply Click it to save the configuration.
Cancel Click it to discard the settings configured in this page.
After finished the above settings, click Apply to save the configuration.