How can one disable PING (not ICMP) in a Fortigate?

Hi,

You can try local in policy, but it is easier to turn them off from the interface.

Example Configuration Given Below:

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Use the following command to close all ICMP ports on the WAN1 interface. The following example blocks traffic that matches the ALL_ICMP firewall service.

config firewall local-in-policy

edit 1

set intf wan1

set srcaddr all

set dstaddr all

set action deny

set service ALL_ICMP

set schedule always

end

Article Reference:

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https://docs.fortinet.com/document/fortigate/6.4.0/hardening-your-fortigate/833110/use-local-in-policies-to-close-open-ports-or-restrict-access