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When CoreXL is enabled on Security Gateway, fragmented traffic over a SSL VPN tunnel (SNX) may be dropped Technical Level
Symptoms
  • When SNX client connects to Security Gateway (VPN or Mobile Access), the traffic does not pass over the VPN tunnel (e.g., file share does not open).

  • SmartView Tracker shows that Security Gateway drops the traffic that should pass over the VPN tunnel:
    Information: encryption failure: Clear text packet should be encrypted
    Encryption Scheme: NA


  • Disabling CoreXL completely on VPN Security Gateway solves the issue.

  • Issue does not occur for Endpoint Connect Clients.
Solution
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