仕事場
PS C:\Users\magcup> Test-NetConnection -ComputerName m2.tuyaus.com -Port 8886
警告: TCP connect to (54.212.163.173 : 8886) failed
警告: TCP connect to (100.21.156.247 : 8886) failed
警告: TCP connect to (54.188.109.168 : 8886) failed
警告: Ping to 54.212.163.173 failed with status: TimedOut
警告: Ping to 100.21.156.247 failed with status: TimedOut
警告: Ping to 54.188.109.168 failed with status: TimedOutComputerName : m2.tuyaus.com
RemoteAddress : 54.212.163.173
RemotePort : 8886
InterfaceAlias : イーサネット 2
SourceAddress : 192.168.10.2
PingSucceeded : False
PingReplyDetails (RTT) : 0 ms
TcpTestSucceeded : FalsePS C:\Users\magcup> Test-NetConnection -ComputerName a1.tuyaus.com -Port 433
警告: TCP connect to (54.69.93.57 : 433) failed
警告: TCP connect to (52.35.22.129 : 433) failed
警告: TCP connect to (52.25.244.7 : 433) failed
警告: Ping to 54.69.93.57 failed with status: TimedOut
警告: Ping to 52.35.22.129 failed with status: TimedOut
警告: Ping to 52.25.244.7 failed with status: TimedOut
ComputerName : a1.tuyaus.com
RemoteAddress : 54.69.93.57
RemotePort : 433
InterfaceAlias : イーサネット 2
SourceAddress : 192.168.10.2
PingSucceeded : False
PingReplyDetails (RTT) : 0 ms
TcpTestSucceeded : False
自宅
PS C:\Users\spinf> Test-NetConnection -ComputerName m2.tuyaus.com -Port 8886 ComputerName : m2.tuyaus.com
RemoteAddress : 34.211.189.2
RemotePort : 8886
InterfaceAlias : Wi-Fi
SourceAddress : 192.168.10.113
TcpTestSucceeded : TruePS C:\Users\spinf> Test-NetConnection -ComputerName a1.tuyaus.com -Port 433
警告: TCP connect to (54.69.93.57 : 433) failed
警告: TCP connect to (52.25.244.7 : 433) failed
警告: TCP connect to (52.35.22.129 : 433) failed
ComputerName : a1.tuyaus.com
RemoteAddress : 54.69.93.57
RemotePort : 433
InterfaceAlias : Wi-Fi
SourceAddress : 192.168.10.113
PingSucceeded : True
PingReplyDetails (RTT) : 143 ms
TcpTestSucceeded : False
あれ、"a1"の433は通らぬのか？ pingは行ってるのだが。
これらのツールを公開したバックグラウンドにはIoTデバイスを介した攻撃を未然に防ぐことを目的として公開され、研究チームの調査によるとGeeniのスマート家電は中国を拠点とするTuYa Inc.が運営するドメイン”tuyaus.com”へ頻繁にアクセスしていたそうで、
