Configuring a firewall policy
When devices are behind FortiGate, you must configure a firewall policy on FortiGate to grant the devices access to the internet. In other words, a firewall policy must be in place for any traffic that passes through a FortiGate.
To create a firewall policy in the GUI:
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Go to Policy & Objects > Firewall Policy.
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Click Create New. The New Policy pane is displayed.
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Enter a Name and configure the following necessary settings:
Incoming Interface LAN (port1) Outgoing Interface WAN (port2) Source Source IPv4 address name and address group names Destination Destination IPv4 address name and address group names Schedule Always Service All Action Accept - Click Save.