Elastic Compute Service
Elastic Compute Service
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- Documentation
Elastic Compute ServiceElastic Compute ServiceUser GuideInstancesLogging in to an instanceLogging in to a Linux instanceUsing a Windows host to log in to a Linux instance
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Using a Windows host to log in to a Linux instance
Copy pageDownload PDFUsing a Windows host to log in to a Linux instance
Applicable scenarios
This topic describes how to log in to a Linux ECS instance from a Windows host.
Operating system of the local host | Operating system of the ECS instance | Login tool on local host | Login authentication method |
Operating system of the local host | Operating system of the ECS instance | Login tool on local host | Login authentication method |
Windows | Linux | Command Prompt--SSH command or PuTTY | Password and key |
Prerequisites
- Make sure that the ECS instance you log in to meets the conditions in the Login restrictions.
- Make sure that the ECS instance is associated with an EIP, and can communicate with the Internet.
- If you need data transfer, refer to Transferring files from a local Windows system to a Linux instance (WinSCP).
Password login procedure
Use SSH
Use PuTTY
- On the local host, click "Start" and open the "Command Prompt" terminal.
- Enter the following SSH command.
- ssh <root>@<The EIP address of the Linux ECS instance>
- Input the password of the root user and press the Enter key to log in to the Linux ECS instance.
- Access PuTTY with the browser on your local host, and then download and install it.
- Double-click the putty64.exe file and configure the following parameters.
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- ParameterDescriptionParameterDescriptionHost NameEnter the EIP address of the ECS instance.PortSpecify the port of the ECS instance. In this case, set the port to 22.Connection typeSelect SSH.Saved SessionsName this session based on your needs, and then click "Save". This can help you record this connection for easy logins afterwards.
- Click "Open" to open the PuTTY terminal window. Follow the prompts to enter "root" and the password of the root user. Then, you can log in to the Linux ECS instance.
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Password login procedure
Use SSH
Use PuTTY
- On the local host, click "Start" and open the "Command Prompt" terminal.
- Run the following commands in sequence to make the private key file readable to the current logged-in user.
- icacls <The absolute path of the .pem private key file on the local host> /grant <The username of the local host>:Ficacls <The absolute path of the .pem private key file on the local host> /inheritancelevel:r
- Run the following command to log in to the instance.
- ssh -i <The file path of .pem private key file on the local host> <Username of the Linux instance>@<EIP address of the Linux instance>
- Press the Enter key to log in to the instance.
- Double-click the puttygen.exe file.
- Select "Type of key to generate > RSA". Then, click "Load".
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- Select "All Files", and then select the target private key file. Then click "Open".
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- In the confirmation dialog box that pops up, click "OK", and then select "Save private key" in the following figure.
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- In the confirmation dialog box that pops up, click "Yes".
- Specify a name for the .ppk file, and click "Save".
- Double-click the putty64.exe file.
- In the left-side navigation pane, select "Connection > SSH > Auth". In the right-side pane, click "Browse".
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- Select the .ppk private key file and then click "Open".
- In the left-side navigation pane, click "Session" and configure the following parameters.
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- ParameterDescriptionParameterDescriptionHost NameInput the EIP address of ECS instance.PortSpecify the port for the ECS instance. In this case, the port is set to 22.Connection typeSelect SSH.Saved SessionsName this session based on your needs, and click "Save". This saves the connection so that you can log in more easily next time.
- Click "Open" to go to the run page of "PuTTY". Follow the prompts to enter "root". Then, the system automatically identifies the private key. After this, you can log in to the Linux ECS instance.
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Last updated: 2026.06.18 16:22:21
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