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Firewall Policies created not working
I did a simple exercise where I connected the two PCs to the physical FortiGate (to port1 and port2). Then I created a rule where I set the incoming traffic to port1 and outgoing traffic to port2 (with all other parameters set to 'all'). I also created another rule to permit the reverse traffic. However, all traffic is being denied due to the implicit deny rule. Does anyone have a suggestion regarding this configuration? I can ping the FortiGate from the PCs. The FortiGate is not registered yet (I did the same configuration in VMware Workstation with the FortiGate running on a VM, and it worked).
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Dear @Giovanna ,
Please run the debug command to check the traffic flow and the firewall policy that is matching:
# diagnose debug disable
# diagnose debug flow filter addr <Source_IP> <Destination_IP> and
# diagnose debug flow show function-name enable
# diag debug flow show iprope enable
# diagnose debug console timestamp enable
# diagnose debug flow trace start 1000
# diagnose debug enable
Best regards,
Erlin
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Thank you! Debug didn't show any issues, looks like fortigate takes time to load the configuaration modifications, do you mabye know why this happends? It takes more then 1 hour
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Dear @Giovanna,
Thank you for the reply!
Did you notice the traffic that is flowing into FGT from Sniffer commands?
# diag sniffer packet any "host <Source_IP> and host <Destination_Ip>" 4 0 l
Best regards,
Erlin
Created on ‎03-26-2025 10:22 AM Edited on ‎03-26-2025 10:23 AM
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Hi @Giovanna ,
You need to tell us the details about your traffic:
Ping or HTTP or something else?
Source IP / Destination IP?
The outputs of the debug flow.
And/or the outputs of the sniffer packets capture.
Jerry
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Hi Giovana
Jerry and Salija are right, if you share "diag debug flow" output it will help us to help you.

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