Hello, How Are you Guys !
I Have A Private Server , But Some One Now Drop My Shard Manger By Flood
he make flood on shard manger then shard got crash !
you have to ask in but i'm gonna answer you.
why are you opening shardmanager's port in firewall? you don't need it.
delete shardmanager role from firewall.
Provide a fatal error log if exist , and try to use this ,
beethink ip blocker ,
and as they mentioned block all udp ports and TCP ports , and just make a rule to open tcp ports of gateway and downloadserver if needed and agent ONLY .