Hello everyone…
In short, the problem is that I’ve noticed ping delays (1000 and above) when pinging to client’s stations…when disconnecting/disabling the main link/bridge with the main internet provider having the server, the client’s ping goes to <10ms.
The problem as we believe, is a client’s station that is making this, not sure if a kind of attack or whatever.
My question is, how can I protect my self from such an attack/issue?
Plz answer me as soon as possible 
Thanks in advance