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07-18-2013 06:47 AM
Good day,
Please advise, how does the PANOS handle antispoofing when there is no default route configured in a VR, only the policy based forwarding is enabled within that VR.
Does the policy based forwarding entry update the routing table entries.
Regards
Sarish
07-18-2013 06:59 AM
Hi Sarish,
The PANFW would still perform route lookup for the traffic coming in from the source zone/ source interface. If the PANFW detects that the traffic ingressing the traffic comes on the incorrect interface, it drops them as spoofed packets or with "no-arp-found" message. It cannot check the same for the destination address because, we are forcing the firewall to route the traffic out via another interface. After the traffic matches a PBF rule, the traffic is subjected to a security rule match, and a session would be setup for the traffic ( client to source and return traffic-source to client). Both the client to server and the server to client traffic is again subjected to other security checks.
Let me know if that helps.
BR,
Karthik RP
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