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Restart Ssh Service



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Overview

PowerShell remoting normally uses WinRM for connection negotiation and data transport. SSH is nowavailable for Linux and Windows platforms and allows true multiplatform PowerShell remoting.

WinRM provides a robust hosting model for PowerShell remote sessions. SSH-based remoting doesn'tcurrently support remote endpoint configuration and Just Enough Administration (JEA).

SSH remoting lets you do basic PowerShell session remoting between Windows and Linux computers. SSHremoting creates a PowerShell host process on the target computer as an SSH subsystem. Eventuallywe'll implement a general hosting model, similar to WinRM, to support endpoint configuration andJEA.

The New-PSSession, Enter-PSSession, and Invoke-Command cmdlets now have a new parameter set tosupport this new remoting connection.

To create a remote session, you specify the target computer with the HostName parameter andprovide the user name with UserName. When running the cmdlets interactively, you're prompted fora password. You can also use SSH key authentication using a private key file with theKeyFilePath parameter. Creating keys for SSH authentication varies by platform.

Restart Ssh Service Mint

Also note it should be sudo service ssh restart – Sridhar Sarnobat Jan 22 '17 at 20:25 'sudo service ssh restart' works fine on ubuntu xenial. – Binita Bharati May 26 '18 at 6:39. You must have server root access to restart SSH service on a linux server. The below commands will work only if your linux server is CentOS 6 or RHEL 6 release. Before doing the below steps you must check the file “/etc/redhat-release” to find the OS version. root@server $ cat /etc/redhat-release. Sudo service ssh status sudo service ssh restart Share. Improve this answer. Follow answered Apr 10 '20 at 8:30. Sarkiroka sarkiroka. 131 3 3 bronze badges. Add a comment 2. As stated in the comments the main service is ssh.service. But you can it also address with sshd.service.

General setup information

Start Ssh Service

PowerShell 6 or higher, and SSH must be installed on all computers. Install both the SSH client(ssh.exe) and server (sshd.exe) so that you can remote to and from the computers. OpenSSH forWindows is now available in Windows 10 build 1809 and Windows Server 2019. For more information, seeManage Windows with OpenSSH. For Linux,install SSH, including sshd server, that's appropriate for your platform. You also need to installPowerShell from GitHub to get the SSH remoting feature. The SSH server must be configured to createan SSH subsystem to host a PowerShell process on the remote computer. 6th grade short stories. And, you must enablepassword or key-based authentication.

Set up on a Windows computer

  1. Install the latest version of PowerShell. For more information, seeInstalling PowerShell Core on Windows.

    You can confirm that PowerShell has SSH remoting support by listing the New-PSSession parametersets. You'll notice there are parameter set names that begin with SSH. Those parameter setsinclude SSH parameters.

  2. Install the latest Win32 OpenSSH. For installation instructions, seeGetting started with OpenSSH.

    Note

    If you want to set PowerShell as the default shell for OpenSSH, seeConfiguring Windows for OpenSSH.

  3. Edit the sshd_config file located at $env:ProgramDatassh.

    Make sure password authentication is enabled:

    Create the SSH subsystem that hosts a PowerShell process on the remote computer:

    Note

    The default location of the PowerShell executable is c:/progra~1/powershell/7/pwsh.exe. Thelocation can vary depending on how you installed PowerShell.

    You must use the 8.3 short name for any file paths that contain spaces. There's a bug inOpenSSH for Windows that prevents spaces from working in subsystem executable paths. For moreinformation, see this GitHub issue.

    The 8.3 short name for the Program Files folder in Windows is usually Progra~1. However,you can use the following command to make sure:

    Optionally, enable key authentication:

    For more information, see Managing OpenSSH Keys.

  4. Restart the sshd service.

  5. Add the path where OpenSSH is installed to your Path environment variable. For example,C:Program FilesOpenSSH. This entry allows for the ssh.exe to be found.

Set up on an Ubuntu 16.04 Linux computer

  1. Install the latest version of PowerShell, seeInstalling PowerShell Core on Linux.

  2. Install Ubuntu OpenSSH Server.

  3. Edit the sshd_config file at location /etc/ssh.

    Make sure password authentication is enabled:

    Optionally, enable key authentication:

    For more information about creating SSH keys on Ubuntu, see the manpage forssh-keygen.

    Add a PowerShell subsystem entry:

    Note

    The default location of the PowerShell executable is /usr/bin/pwsh. The location can varydepending on how you installed PowerShell.

    Optionally, enable key authentication:

  4. Restart the ssh service.

Set up on a macOS computer

  1. Install the latest version of PowerShell. For more information,Installing PowerShell Core on macOS.

    Make sure SSH Remoting is enabled by following these steps:

    1. Open System Preferences.
    2. Click on Sharing.
    3. Check Remote Login to set Remote Login: On.
    4. Allow access to the appropriate users.

  2. Edit the sshd_config file at location /private/etc/ssh/sshd_config.

    Use a text editor such as nano:

    Make sure password authentication is enabled:

    Add a PowerShell subsystem entry:

    Note

    The default location of the PowerShell executable is /usr/local/bin/pwsh. The location canvary depending on how you installed PowerShell.

    Optionally, enable key authentication:

  3. Restart the sshd service.

Authentication

PowerShell remoting over SSH relies on the authentication exchange between the SSH client and SSHservice and doesn't implement any authentication schemes itself. The result is that any configuredauthentication schemes including multi-factor authentication are handled by SSH and independent ofPowerShell. For example, you can configure the SSH service to require public key authentication anda one-time password for added security. Configuration of multi-factor authentication is outside thescope of this documentation. Refer to documentation for SSH on how to correctly configuremulti-factor authentication and validate it works outside of PowerShell before attempting to use itwith PowerShell remoting.

Note

Users retain the same privileges in remote sessions. Meaning, Administrators have access to anelevated shell, and normal users will not.

PowerShell remoting example

Restart ssh service

The easiest way to test remoting is to try it on a single computer. In this example, we create aremote session back to the same Linux computer. We're using PowerShell cmdlets interactively so wesee prompts from SSH asking to verify the host computer and prompting for a password. You can do thesame thing on a Windows computer to ensure remoting is working. Then, remote between computers bychanging the host name.

Limitations

Restart Ssh Service Command

  • The sudo command doesn't work in a remote session to a Linux computer.

  • PSRemoting over SSH does not support Profiles and does not have access to $PROFILE. Once in asession, you can load a profile by dot sourcing the profile with the full filepath. This is notrelated to SSH profiles. You can configure the SSH server to use PowerShell as the default shelland to load a profile through SSH. See the SSH documentation for more information.

  • Prior to PowerShell 7.1, remoting over SSH did not support second-hop remote sessions. Thiscapability was limited to sessions using WinRM. PowerShell 7.1 allows Enter-PSSession andEnter-PSHostProcess to work from within any interactive remote session.

See also