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SSH Permission Issues and Solutions for Remote Connections with VSCode

Popularity：83 ℃/2024-10-23 14:48:03

When connecting remotely over SSH using VSCode, you may encounter file permission issues that cause the connection to fail. This article will document in detail how to configure files for SSH (config) and private key files (id_rsa) to correctly set permissions, thus resolving the issue of VSCode remote connections and SSH not being able to log in without confidentiality.

Background to the issue

The following two main issues were encountered when connecting to a remote server via SSH in VSCode:

  1. SSH configuration file (config) Permission Issues: VSCode TipEveryone user group vs.config The permissions on the file are too high, and it is requested that only read permissions be retained.

    Report an error message:

    [13:14:14.179] Log Level: 2
[13:14:14.192] Remote-SSH version: [email protected]
[13:14:14.193] win32 x64
[13:14:14.194] SSH Resolver called for host: guiyun
[13:14:14.194] Setting up SSH remote "guiyun"
[13:14:14.197] Using commit id "d994aede3529f4d1af9eeaeb234d32fd936243e7" and quality "insider" for server
[13:14:14.199] Install and start server if needed
[13:14:15.556] Got error from ssh: spawn C:\WINDOWS\System32\WindowsPowerShell\v1.0\ ENOENT
[13:14:15.556] Checking ssh with "C:\WINDOWS\System32\OpenSSH\ -V"
[13:14:15.596] > OpenSSH_for_Windows_9.5p1, LibreSSL 3.8.2
[13:14:15.599] Running script with connection command: "C:\WINDOWS\System32\OpenSSH\" -T -D 5902 guiyun bash
[13:14:15.601] Terminal shell path: C:\WINDOWS\System32\
[13:14:15.845] > Bad permissions. Try removing permissions for user: \\Everyone (S-1-1-0) on file C:/Users/Administrator/.ssh/config.
> Bad owner or permissions on C:\\Users\\Administrator/.ssh/config
> The pipe the process is trying to write to does not exist。
> ]0;C:\WINDOWS\System32\
[13:14:15.845] Got some output, clearing connection timeout
[13:14:17.122] "install" terminal command done
[13:14:17.122] Install terminal quit with output: ]0;C:\WINDOWS\System32\
[13:14:17.122] Received install output: ]0;C:\WINDOWS\System32\
[13:14:17.123] Failed to parse remote port from server output
[13:14:17.124] Resolver error: Error:
	at (c:\Users\Administrator\.vscode-insiders\extensions\-ssh-0.111.2024040515\out\:2:499181)
	at (c:\Users\Administrator\.vscode-insiders\extensions\-ssh-0.111.2024040515\out\:2:496503)
	at (c:\Users\Administrator\.vscode-insiders\extensions\-ssh-0.111.2024040515\out\:2:620043)
	at async c:\Users\Administrator\.vscode-insiders\extensions\-ssh-0.111.2024040515\out\:2:579901
	at async (c:\Users\Administrator\.vscode-insiders\extensions\-ssh-0.111.2024040515\out\:2:583207)
	at async k (c:\Users\Administrator\.vscode-insiders\extensions\-ssh-0.111.2024040515\out\:2:576866)
	at async (c:\Users\Administrator\.vscode-insiders\extensions\-ssh-0.111.2024040515\out\:2:580578)
	at async c:\Users\Administrator\.vscode-insiders\extensions\-ssh-0.111.2024040515\out\:2:846696
[13:14:17.126] ------

  2. The private key file (id_rsa) Unable to log in without a password: SSH Tipid_rsa Insecure private key file permissions prevent password-free login.

    Report an error message:

    PowerShell 7.4.5
PS C:\Users\Administrator> ssh [email protected] -p 22
Bad permissions. Try removing permissions for user: \\Everyone (S-1-1-0) on file C:/Users/Administrator/.ssh/id_rsa.
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions for 'C:\\Users\\Administrator/.ssh/id_rsa' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "C:\\Users\\Administrator/.ssh/id_rsa": bad permissions
[email protected]'s password:

This article will explain how to solve these two problems step by step in order to make a smooth remote SSH connection using VSCode.

1. Configure the file for SSHconfig Setting Up Permissions

VSCode Requirementsconfig The permissions on the file must be read-only and limited to the current user and theEveryone Read by user group. If the permissions are not set properly, VSCode will not be able to use the remote SSH function properly.

Step 1: Check Current Permissions

First, checkconfig The current permission settings for the file. Open thePowerShell, and run the following command:

icacls "C:\Users\Administrator\.ssh\config"

Check if the output containsEveryone user group permissions, paying particular attention to the availability of write permissions (e.g., the(W)). IfEveryone has write permissions, which may cause the VSCode SSH connection to fail.

Step 2: SetupEveryone read-only access

VSCode Requirementsconfig documentationEveryone User groups can only have read access.

Ensure removalEveryone write permission: IfEveryone has write permission, we need to make sure we remove it completely. Execute the following command to remove theEveryone The write permission of the

icacls "C:\Users\Administrator\.ssh\config" /remove "Everyone"

Disable privilege inheritance: To ensure that files don't inherit unnecessary permissions from the parent directory, we need to disable permission inheritance:

icacls "C:\Users\Administrator\.ssh\config" /inheritance:r

This disables inherited permissions and ensures that theconfig The file uses only the current manually set permissions.

To do this, you can give theEveryone Read-only permissions:

icacls "C:\Users\Administrator\.ssh\config" /grant "Everyone:R"

Step 3: Verify Permissions

After performing the above operations, verify that the permissions are set correctly. Run the following command:

icacls "C:\Users\Administrator\.ssh\config"

Should see something likeEveryone:(R) The output of theEveryone The user group only has read permissions, not write permissions. This means that the file's permissions are configured to meet the requirements of the VSCode SSH connection. With these steps, you can ensure that theconfig file permissions are properly configured to resolve permissions issues with VSCode remote SSH connections.

Step 4: Verify the Remote Connection Command

After you have finished adjusting the file permissions, you can verify that the remote connection is working properly by using the SSH command. Make sure you have set up theconfig file permissions and have completed all permissions remediation steps.

1. Run the following command in Terminal or PowerShell:
ssh root@ -p 22
  • root: The username of the remote server you wish to use.
  • : The IP address of the server you want to connect to.
  • -p 22: The port number used for the connection, the default is22, which can be adjusted as needed.
2. Successful connection:

If configured correctly, you will see a connection prompt that may ask you if you want to accept fingerprint information from the remote server, like this:

The authenticity of host ' ()' can't be established.
ED25519 key fingerprint is SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
Are you sure you want to continue connecting (yes/no)? yes

importationyes After that, you will be asked to enter a password or use an SSH key for a password-free login.

3. Connection failures:

If it still does not connect, check:

  • config The IP, port, and username in the file are correct.
  • The private key file (e.g.id_rsa) permissions are set correctly to ensure that only the owner of the file has access.
  • Is the remote server's firewall or SSH service configured correctly.

Upon completion, you should be able to successfully connect to the remote server via SSH commands and verify that VSCode's SSH remote connection feature is working properly.

2. Resolving SSH private keysid_rsa Excessive file permissions

When configuring password-free login with SSH keys, SSH needs to make sure that the permissions on the private key file are so strict that only the owner of the file can access it. If the permissions are too loose (such asEveryone also has permission), SSH will refuse to use the private key.

Step 1: Disable Inheritance Permissions

First, we need to disable inherited permissions on the private key file so that the file does not inherit unnecessary permissions from the upper directory.

icacls "C:\Users\Administrator\.ssh\id_rsa" /inheritance:r

Step 2: RemovalEveryone approvals

assureEveryone No longer has any permissions to the private key file:

icacls "C:\Users\Administrator\.ssh\id_rsa" /remove "Everyone"

Step 3: Create a new version of theAdministrator Setting Read Permissions

Set the permissions on the private key file so that theAdministrator Read-only access:

icacls "C:\Users\Administrator\.ssh\id_rsa" //grant:r "Administrator:(R)"

Step 4: Verify Permissions

Re-verify the permissions to ensure that theEveryone has been removed and onlyAdministrator Have read access:

icacls "C:\Users\Administrator\.ssh\id_rsa"

The output should show similar:

C:\Users\Administrator\.ssh\id_rsa DANCIPC\Administrator:(R)

Step 5: Verify Remote Connection Command

After you have finished adjusting the file permissions, you can verify that the remote connection is working properly by using the SSH command. Make sure you have set up theconfig file permissions and have completed all permissions remediation steps.

1. Run the following command in Terminal or PowerShell:
ssh root@ -p 22
  • root: The username of the remote server you wish to use.
  • : The IP address of the server you want to connect to.
  • -p 22: The port number used for the connection, the default is22, which can be adjusted as needed.
2. Successful connection:

If configured correctly, you will see a connection prompt that may ask you if you want to accept fingerprint information from the remote server, like this:

The authenticity of host ' ()' can't be established.
ED25519 key fingerprint is SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
Are you sure you want to continue connecting (yes/no)? yes

importationyes After that, you will be asked to enter a password or use an SSH key for a password-free login.

3. Connection failures:

If it still does not connect, check:

  • config The IP, port, and username in the file are correct.
  • The private key file (e.g.id_rsa) permissions are set correctly to ensure that only the owner of the file has access.
  • Is the remote server's firewall or SSH service configured correctly.

Upon completion, you should be able to successfully connect to the remote server via SSH commands and verify that VSCode's SSH remote connection feature is working properly.

3. Summary of resolving VSCode remote connection issues

When configuring SSH, it is critical that the correct file permissions are set.VSCode remote connections require that the SSH configuration fileconfig permissibleEveryone user group read permissions, while the SSH private key fileid_rsa It must be strictly prohibitedEveryone Access.

  • SSH configuration file (config）: ReservationsEveryone of read permissions, removing write permissions.
  • SSH private key file (id_rsa）: Removes the permissions of all user groups and retains only the read permissions of the current user.

By adjusting these permissions, VSCode will be able to connect remotely via SSH without any problems, and SSH will be able to securely log in password-free with a private key.

If you encounter similar problems when using VSCode Remote SSH, I hope the solutions in this article can help you resolve permission-related errors and improve your work efficiency.

List of reference commands

  • Check file permissions:

    icacls "C:\Users\Administrator\.ssh\config"

  • because ofEveryone Set read-only permissions:

    icacls "C:\Users\Administrator\.ssh\config" /grant "Everyone:(R)"

  • Disable inherited permissions:

    icacls "C:\Users\Administrator\.ssh\id_rsa" /inheritance:r

  • removesEveryone Permissions:

    icacls "C:\Users\Administrator\.ssh\id_rsa" /remove "Everyone"

  • because ofAdministrator Set the read permission:

    icacls "C:\Users\Administrator\.ssh\id_rsa" /grant:r "Administrator:(R)"

  • Verify Remote Connection Command

    ssh root@ -p 22

    I hope this blog will help you to successfully resolve VSCode SSH connection permission issue and enable SSH key password-free login feature.

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