enable ip-security anomaly-protection tcp flags

enable ip-security anomaly-protection tcp flags {slot [ slot | all ]}

Description

Enables 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 Enables 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.

Platform Availability

This command is available on the ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X670-G2, X690, X695, and X870 series switches.

9036636-00 Rev AA