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Cloud platforms like Microsoft Azure rely on health probes to determine the availability of backend instances.
For IPv4, FortiGate already supports probe-response.
Prior to FortiOS 7.6.5, the probe-response option was not available for IPv6.
Starting from FortiOS 7.6.5, probe-response support is added for IPv6 interfaces.
This enhancement improves FortiGate compatibility with IPv6-based cloud load balancers and health probes
Behavior in FortiOS 7.6.4 (and earlier):
In an IPv4 interface, probe-response is available.
In FortiOS 7.6.4, probe-response is available under IPv4 interface access settings:
config system interface
edit port2
set allowaccess ping https ssh snmp http telnet fgfm radius-acct probe-response fabric ftm speed-test
next
end
In an IPv6 interface, probe-response is not available.
In the same FortiOS version, IPv6 access settings do not include probe-response:
config system interface
edit port2
config ipv6
set ip6-allowaccess ping https ssh snmp http telnet fgfm fabric
end
next
end
Behavior in FortiOS 7.6.5 (and later):
Starting with FortiOS 7.6.5, probe-response is available under IPv6 interface access:
config system interface
edit port2
config ipv6
set ip6-allowaccess ping https ssh snmp http telnet probe-response fgfm fabric
end
next
end
This functionality is introduced as a new feature under feature ID 1135850 in FortiOS 7.6.5 and 8.0.0.
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