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PhoneBoy
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Admin

In terms of the OSI model:

  • The Stateful Inspection (i.e. the firewall kernel) sits between Layers 2 and 3 in the OSI Model
  • The “Acceleration Device” (SecureXL) sits between Layers 1 and 2

There are multiple userspace processes that operate in Layer 7 that is, in many cases, have traffic directed to them by the firewall kernel.

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