FortiGate firewall configuration with /30 and /28 networks

Posted by slyderc on Server Fault See other posts from Server Fault or by slyderc
Published on 2012-10-04T00:17:53Z Indexed on 2012/10/04 3:40 UTC
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networking

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firewall

I have fiber coming in from a new ISP which is being handed off via Ethernet on a single physical port. I'm having doubts about how to approach the configuration on my FortiGate 200A firewall because I've been given a /30 containing the ISP's gateway and another /28 for external IPs I can use:

x.y.76.12/30 (.13 is the GW)
x.y.76.64/28 (public IP space)

How do I configure the FG200A's WAN1 interface to be aware of the two networks? As I only have one physical ISP port, will I need to plug it into a switch to break-out two cables and use a DMZ port on the FG200A for setting up the /28? Thanks in advance for your insight!

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