Processing non-tagged packets on a transp...

FortiGate

FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.

Article Id 190377

Description
This article describes how to process non-tagged packets on a transparent unit. When sending NON-Tagged packets from a Switch to a FortiGate unit in transparent mode, packets are dropped unless the receiving interface is a physical one.

Solution
On FortiGate units, the physical interfaces are the only ones able to process (send and accept) non-tagged packets.

Non-Tagged packets (like VTP, CDP, ...) should never be directed to a non-physical interface, like a VLAN sub-interface. Also "stpforward" must be applied on the port configuration.

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Contributors

mflamingos

Anthony_E

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The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.

Technical Tip: Processing non-tagged packets on a transparent unit

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