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Download EPUBdisable ip-security anomaly-protection tcp flags
disable ip-security anomaly-protection tcp flags {slot [ slot | all ]}
Description
Disables TCP flag checking.
Syntax Description
| slot | Specifies the slot to be used. |
| all | Specifies all IP addresses, or all IP addresses in a particular state. |
Default
The default is disabled.
Usage Guidelines
This command
disables TCP flag checking. This checking takes effect for both
IPv4 and IPv6 TCP packets. When enabled, the switch drops TCP packets
if one of following condition is true:
-
TCP SYN flag==1 and the source port<1024
-
TCP control flag==0 and the sequence number==0
-
TCP FIN, URG, and PSH bits are set, and the sequence number==0
-
TCP SYN and FIN both are set.
History
This command was first available in ExtremeXOS 12.0.