I have a sonic wall as the router. (Not mine), it is giving me a natted 192.168.101.x ip address on my wan interface. On my Fortigate 100D i want to have a dhcp range of 172.16.0.0/22 for my lan interface. I do not want to double nat, is there a way to use the natting coming from the sonicwall and disable nat on the fortigate?
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On fortigate you simply create a firewall policy from LAN to WAN without NAT enabled in it , which is essentially route mode . On sonicwall create a static route for 172.16.0.0/22 subnet with gateway as IP address WAN interface of fortigate .
So i would have to add 192.168.101.25(fortigate WAN IP) on the sonic walls static route?
Static route on sonicwall should be like below
Destination: 172.16.0.0/22
Gateway - 192.168.101.25
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