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SMCBR21VPN

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Detect Ping of Death Attack:<br />

Select this option to detect the attacks of tremendous trash data in PING<br />

packets that hackers send to cause System malfunction. This attack can<br />

cause network speed to slow down, or even make it necessary to restart the<br />

computer to get a normal operation.<br />

Detect IP Spoofing Attack:<br />

Select this option to detect spoof attacks. Hackers disguise themselves as<br />

trusted users of the network in Spoof attacks. They use a fake identity to<br />

try to pass through the SMC BR21VPN System and invade the network.<br />

Detect Port Scan Attack:<br />

Select this option to detect the port scans hackers use to continuously scan<br />

networks on the Internet to detect computers and vulnerable ports that are<br />

opened by those computers.<br />

Detect Tear Drop Attack:<br />

Select this option to detect tear drop attacks. These are packets that are<br />

segmented to small packets with negative length. Some Systems treat the<br />

negative value as a very large number, and copy enormous data into the<br />

System to cause System damage, such as a shut down or a restart.<br />

Filter IP Route Option:<br />

Each IP packet can carry an optional field that specifies the replying address<br />

that can be different from the source address specified in packet’s header.<br />

Hackers can use this address field on disguised packets to invade LAN<br />

networks and send LAN networks’ data back to them.<br />

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