Draytek Vigor3300 Series Manual de usuario descargar pdf (Pagina 32)

2.2.1.4 synflood

This command can activate the SYN flood defense function. If the amount of TCP SYN

packets from the Internet exceeds the user-defined threshold value, the router will be forced to

randomly discard the subsequent TCP SYN packets within the user-defined timeout period.

enable <0/1>

threshold<value> <timeout>

threshold -s

Syntax Description

enable Enter “Enable 1” to enable SYN flood defense.

Enter “Enable 0” to disable SYN flood defense.

value Enter the number of the threshold for SYN flood defense. The

range is from 0 to 65535. (default=300 packets/sec)

timeout Enter the value (greater than 5) for the time out. The unit is

second.

-s It is used for displaying the settings of current threshold.

Example

DrayTek/firewall/dos/synflood> enable 1

DrayTek/firewall/dos/synflood> threshold 320 200

DrayTek/firewall/dos/synflood> threshold -s

Firewall Dos SYN flood Threshold: 320 Packets/sec

Timeout: 200 sec

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Draytek Vigor3300 Series Manual de usuario Pagina 32