您必须在用于启动实例的安全组上打开正确的端口（可能是 21）。之后，您还必须在实例上打开该端口（如果尚未打开）。
You have to open the proper ports (probably 21) on the security group you used to launch your instance. After that, you have to open that port on the instance as well if it's not already open.
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您必须在用于启动实例的安全组上打开正确的端口（可能是 21）。之后，您还必须在实例上打开该端口（如果尚未打开）。
You have to open the proper ports (probably 21) on the security group you used to launch your instance. After that, you have to open that port on the instance as well if it's not already open.