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DescriptionThere are more packets/sec reported for the Most Active Source graph compared to what the FortiDDoS is actually receiving/sending for that source and also compared to other graphs.ScopeAll FortiDDoS.SolutionFor TCP and DNS traffic, the MAS...
DescriptionThis article explains why FortiDDoS may continue to forward SYN packets under a SYN flood attack even though the threshold for SYN packets has been set.ScopeFortiDDoS v4.1 and laterSolutionThe SYN mitigation happens only when the ALL the f...
DescriptionWhen two units form a cluster, it is not possible to change or delete the “admin” account. Any attempt to do this will create a synchronization issue and the HA system.admin checksums will not match.ScopeFortiOS v4.3 and above.SolutionIt i...
DescriptionThis article explains the information counters related to session that can be displayed with the command diag sys session stat:# diag sys session statmisc info: session_count=0 setup_rate=250 exp_count=0 clash=0 memory_tension_drop=0 ephem...
DescriptionAfter upgrading to 4.2.2 an increase may be seen of the packet drops with L3/L4 anomalies into the different SPP except SPP-0.ScopeStarting from FortiDDoS v4.2.2SolutionBy design, from release 4.0.0, the following anomalies were reported i...
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