D-Link DGS-6600-48TS Configuration Guide - Page 452
Configuration Commands, Blat Attack, Smurf Attack, TCP Null scan, TCP Xmas scan, TCP SYN FIN
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Volume 8-DoS Protection / Chapter 41-DoS Protection Attack Type Land Attack Trap/Log Blat Attack Smurf Attack TCP Null scan TCP Xmas scan TCP SYN FIN TCP SYN source port
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Volume 8-DoS Protection / Chapter 41-DoS Protection
Configuration Commands
DGS-6600 Configuration Guide
452
Configuration Commands
Attack Type
Description
Land Attack
A Land attack is an attack where IP packets source
and destination addresses are set to the address of
the targeted device. It may cause a target deice to
reply to itself continuously.
Trap/Log
Users can configure trap/log action to log or send
trap. When the action configured, the trap/log will
be triggered once every 5 minutes, if there are
attacking packets received in previous 5 minutes,
the module will log and send trap.
Blat Attack
This type of attack will send packets with TCP/UDP
source ports equal to the destination port of the
target device. This may cause target device to
respond to itself.
Smurf Attack
Attacker sends a large number of ICMP request
packets to IP broadcast addresses, the SIP of
attacking packets equals the victim’s IP address. If
a router delivers traffic to the IP broadcast address,
all hosts in that IP network will reply with ICMP to
the victim IP address.
TCP Null scan
TCP sequence number is zero and all control bits
are zero.
TCP Xmas scan
TCP packets with FIN, URG, PSH bits set and
sequence number is zero.
TCP SYN FIN
TCP packets with SYN, FIN bit set.
TCP SYN source port <1024
TCP packets with SYN bit set, and source port
<1024.
Commands
Description
clear dos_prevention counter
Use this command to clear the counter of all attack
types.
dos_prevention action {trap_log}
Use this command to specify the action to perform
when a DoS attack occurs, use the no form to
disable.
dos_prevention type {ATTACK-TYPES}
Use this command to enable/disable DoS
prevention mechanism. The packet matching and
actions are handled by hardware. For each type of
attack, the device will match the specific pattern
automatically, use the no form to disable.
show dos_prevention
Use this command to show DoS prevention status
and related drop counters.