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| Firewall Configuration
C
8
HAPTER
DoS
TCP SynWithData: Prevents the hacker sending a volume of
■
requests for connections that cannot be completed.
UDP Bomb: Also called a UDP Flood or packet storm. Prevents the
■
hacker congesting the network by generating a flood of UDP packets
between it and the unit using the UDP chargen service (a testing
utility that generates a character string for every packet it
receives).
UDP EchoChargen: Prevents the hacker from sending a UDP
■
packet to the echo server with a source port set to the chargen
port.
packets/second: Enter the number of packets per second that you
■
want to scan for malicious activity.
Sensitivity: Specifies the sensivity of the TCP/UDP port scan
■
prevention. (Options: High, Low; Default: Low)
Select All — Selects all DoS prevention measures listed.
◆
Clear — Clears all fields.
◆
Enable Source IP Blocking — When multiple attacks are detected
◆
from each of the fields listed above, or the packet threshold has been
exceeded - the IP address of the hacker is blocked.
Block Interval (second) — Sets the length of time the IP address
◆
should remain blocked.
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