Details

If an invalid TCP checksum is calculated, the packet will be dropped.

Solution

Navigate to Firewall Settings->Flood Protection->TCP Settings and check off ‘Enable TCP checksum enforcement’.

This security hardening control applies to the following category of controls within NIST 800-53: System and Communications Protection.This control applies to the following type of system SonicWALL.

References

• 800-53|SC-5

Source

• Tenable.com/audits