Peace,
And you're sure that you are the reflection target not the reflection vector?
Well, in almost any* case blacklisting reflection vectors by IP is an insanely bad practice.
* — I can *think* of a use case when this could be an appropriate solution (I recall Netscout/Arbor once had such a use case), but in the overwhelming majority of incidents it is absolutely not, and you need to be one hundred percent sure you know what you're doing.
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Töma