if we are going to the tab "Policy" we will see 7 different sub tabs. The tabs are:
So I know for example that Security rules are always checked before NAT rules but whats about the rest? I spent planty of time google for this information but without success.
For the security and NAT it is will go in order. My guess for rest of the sub tabs as well.
So security policy from top > bottom until first match. If the NAT is configured same from top > bottom. Traffic will be scanned from top>bottom for every sub tabs if configured.
Do look at the packet flow process noted above. The general flow is:
Routing lookup - This is needed to assign zones and know the egress interface
NAT - This occurs then to get the final ip addresses after NAT
Security policy check - now we have all the information to confirm if the flow is permitted
Deeper inspections - if permitted, we perform any deep inspections applied to the policy
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