User`s guide

VigorTalk ATA24 Series User’s Guide

Enable Block IP Options Activates the Block IP options function. The adapter will ignore

any IP packets with IP option field appearing in the datagram

header.

Enable Block Land Activates the Block Land function. A Land attack occurs when

an attacker sends spoofed SYN packets with

identical source address, destination addresses and port number

as those of the victim.

Enable Block Smurf Activates the Block Smurf function. The adapter will reject any

ICMP echo request destined for the broadcast address.

Enable Block Trace Route Activates the Block trace route function. The adapter will not

forward any trace route packets.

Enable Block SYN

Fragment

Activates the Block SYN fragment function. Any packets

having the SYN flag and fragmented bit sets will be dropped.

Enable Block Fraggle

Attack

Activates the Block fraggle Attack function. Any broadcast

UDP packets received from the Internet are blocked.

Enable TCP Flag Scan Activates the Block TCP flag scan function. Any TCP packet

with an anomalous flag setting is dropped. These scanning

activities include no flag scan, FIN without ACK scan, SYN

FIN scan, Xmas scan and full Xmas scan.

Enable Tear Drop Activates 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 adapters will block any packets resembling this attacking

activity.

Enable Ping of Death Activates the Block Ping of Death function. Many machines

may crash when receiving an ICMP datagram that exceeds the

maximum length. The adapter will block any fragmented ICMP

packets with a length greater than 1024 octets.

Enable Block ICMP

Fragment

Activates the Block ICMP fragment function. Any ICMP

packets with fragmented bit sets are dropped.

Enable Block Unknown

Protocol

Activates the Block Unknown Protocol function. The adapter

will block any packets with unknown protocol types.

Click Apply to apply the settings when you finish the configuration.