Tagged: session-table

18 September 2026 fortigate fortios sdwan troubleshooting proving-the-path session-table npu

Proving the Path Part 2: Ingress and Session

Before touching SD-WAN or routing, the session table tells you whether the flow you're chasing predates the event you're investigating. For the choppy Teams call, that one field settles more than the dashboard did.
29 April 2026 fortigate fortios packet-flow session-table rpf dos deep-dive troubleshooting

A Day in the Life of a Packet on a 50G FortiGate, Part 2: Stateful Inspection, Session Lookup, and Anti-Spoofing

The packet has been punted from the NP7 to the kernel. Now FortiOS does the things ASICs cannot: IP integrity, DoS sensors, RPF, session table lookup, helpers, and the state machine that decides whether this is a brand new flow or one we already know.