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TCPスキャン

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TCPスキャンの動作

  1. ターゲットのTCPポートにSYNパケットを送信
  2. ACKパケットが戻ってくればポートが開いている
  3. RST/ACKパケットが戻ってきた場合はポートが閉じている
  4. 何も戻ってこない場合はfiltered
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