Allow asymmetric routing for ICMP (258734)
Where network topology requires asymmetric routing for ICMP traffic, you can configure the FortiGate to permit the asymmetric ICMP traffic. This is done in the CLI. There are separate fields for IPv4 and IPv6 versions of ICMP.
config system settings
set asymroute-icmp enable set asymroute-icmp6 enable
end
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