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R81.x Security Gateway Architecture (Logical Packet Flow)


This document describes the packet flow (partly also connection flows) in a Check Point R80.10 and above with SecureXL and CoreXL, Content Inspection, Stateful inspection, network and port address translation (NAT), MultiCore Virtual Private Network (VPN) functions and forwarding are applied per-packet on the inbound and outbound interfaces of the device. There should be an overview of the basic technologies of a Check Point Firewall. We have also reworked the document several times with Check Point, so that it is now finally available.


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Logical Packet Flow R80.10



Starting with R80.20 the flows in the firewall have changed.

Therefore the flows can no longer be shown 100% in a drawing. This drawing can only be used as a schematic view. For example, correction flows are used to reinject packets. SecureXL parts are now executed in the inspection code. The processing of accept templates and rule based c

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