Fortigate CLI

1. What's the difference between the two commands below ?

       diagnose debug flow filter addr
       diagnose sys session filter src

2. What the meaning for the command line below ?
       diagnose debug flow trace start 100
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Garry GlendownConsulting and Network/Security SpecialistCommented:
1. the first is for flow debugging, which is used to see in real-time how packets are handled by the firewall, while the second is for the "diag sys sess list". Both are the filters to limit which entries/packets are displayed.

2. This command starts the actual flow debugging, and limits the processing to 100 flows.
AXISHKAuthor Commented:
What's the difference between "diagnose debug flow" and  "diagnose sys session" ? Does former is real time while the latter is not ?

Garry GlendownConsulting and Network/Security SpecialistCommented:
flow debugging is an ongoing process, displaying new flows of communication as they occur, while the sessions is more or less a "snapshot" of the current state, all currently active/known connections at the time of the execution of the command

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