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Thanks for reply any how could i do it ? some network tool for packet analysis ?
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Hello, I have exactly the same scenario as you, a USG 50 FLEX device, it happens completely randomly. I tried to completely delete one of the computers and I also changed the network card on it, but after about a day zywall generate again from this IP "abnormal udp traffic detected, destination port is zero" USG50 FLex is…