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Performance degradation on Security Gateway when port scan test is performed through Security Gateway Technical Level
Symptoms
  • Performance degradation on Security Gateway when port scan test is performed through Security Gateway - all traffic passing through the Security Gateway slowed down.

  • Output of 'top' command shows that some CoreXL FW instances ('fw_worker' processes) are overloaded (consume CPU at 80% and above), while other CoreXL FW instances are not utilized (do not consume CPU).
Cause

CoreXL is not distributing the load symmetrically across the available FW instances because traffic distribution does not optimally take the destination port into account.


Solution
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