We get a L2 hand-off from our ISP. I'd like to be able to apply a L3 ACL on that L3-capable switch which would sit in front of the Fortigate. I figure I would be able to set up NAT on that device (or maybe I wouldn't need to but some other way could make that switch a L3 hop?) and then the firewall could get, say, a 192.168 address which goes to the WAN port of the Fortigate, but what about the firewall also doing NAT? I want the firewall to be able to give out, for example, 2.0.0.1 and 2.0.0.2, and down the line, but can I do that if the firewall is sitting BEHIND a NAT? Any network superstars that have any ideas?
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