PLANET WGSW-50040 - Manual (Page 372)

Commands for Security Function Chapter 6 Commands for TACACS+
Command Mode:
Global Mode
Usage Guide:
With this function enabled, the switch will be able to drop TCP and UDP data packet whose
destination port is equal to the source port. This function can be used associating the
“dosattack-check ipv4-first-fragment enable” function so to block the IPv4 fragment TCP and UDP
data packet whose destination port is equal to the source port.
Example:
Drop the non-fragment TCP and UDP data packet whose destination port is equal to the source
port.
Switch(config)# dosattack-check srcport-equal-dstport enable
25.5 dosattack-check tcp-fragment enable
Command:
[no] dosattack-check tcp-fragment enable
Function:
Enable the function by which the switch detects TCP fragment attacks; the “no” form of this
command disables this function.
Default:
This function is not enabled on the switch by default
Command Mode:
Global Mode
Usage Guide:
By enabling this function the switch will be protected from the TCP fragment attacks, dropping the
data packets whose TCP fragment offset value is 1 or the TCP head is shorter than the specified
value. Use “dosattack-check tcp-header” command to specify the length.
Example:
Enable the Checking TCP fragment attack function.
Switch(config)# dosattack-check tcp-fragment enable
25.6 dosattack-check tcp-segment
Command: