Best way I can think of to accomplish this would be to use a dedicated VLAN and subnet for the guest wifi. Then setup Security Appliance>Traffic Shaping then Flow Preference and Internet Traffic then setup the source subnet as the guest VLAN and protocol, destination, etc as Any and select the preferred WAN1 or WAN2 to direct the traffic.
Adam R MS | CISSP, CISM, VCP, MCITP, CCNP, ITILv3, CMNO
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