Freebsd Ssh Generate Host Key

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An SSH Key allows you to log into your server without needing a password. SSH Keys can be automatically added to servers during the installation process.

When you're creating a FreeBSD virtual machine by using the Azure portal, you must provide a user name, password, or SSH public key. User names for deploying a FreeBSD virtual machine on Azure must not match names of system accounts (UID. This is a guide for setting up an Apple Mac OS X workstation with SSH key-based authentication to a remote FreeBSD server. I won’t go into any detail about these protocols or try to make a case for using them. If you’re reading this, you probably already have a basic grounding on SSH, SFTP.

Creating an SSH key on Windows

The simplest way to create SSH key on Windows is to use PuTTYgen.

  • Download and run PuTTYgen.
  • Click the 'Generate' button.
  • For additional security, you can enter a key passphrase. This will be required to use the SSH key, and will prevent someone with access to your key file from using the key.
  • Once the key has been generated, click 'Save Private Key'. Make sure you save this somewhere safe, as it is not possible to recover this file if it gets lost
  • Select all of the text in the 'Public key for pasting into OpenSSH authorized_keys file'. This is what you would need to enter into the control panel to use the SSH key.

Creating an SSH key on Linux

The tools to create and use SSH are standard, and should be present on most Linux distributions. With the following commands, you can generate ssh key.

  • Run: ssh-keygen -t rsa. For a more secure 4096-bit key, run: ssh-keygen -t rsa -b 4096
  • Press enter when asked where you want to save the key (this will use the default location).
  • Enter a passphrase for your key.
  • Run cat ~/.ssh/id_rsa.pub - this will give you the key in the proper format to paste into the control panel.
  • Make sure you backup the ~/.ssh/id_rsa file. This cannot be recovered if it is lost.

Adding an SSH key to your control panel

  • Once you're logged in, go to https://my.vultr.com/sshkeys.
  • Click 'Add SSH Key'.
  • Enter a descriptive name for the key.
  • Paste in your SSH public key. This is a long string beginning with 'ssh-rsa'. You should have saved this from when you generated your key.
  • Click 'Add SSH Key'.
  • Now, when you're deploying servers you will be able to select which SSH keys you want to add to the newly deployed server. Remember to select the keys before the initial server deployment, otherwise you will need to log into the newly created server and add the SSH keys manually.

Limitations

  • SSH keys are only available for Linux and FreeBSD. They are not supported for Windows, custom ISOs, nor snapshot restores.
  • SSH keys can only be managed from the control panel during deployment. You cannot use the control panel to manage them on an already-installed instance.

Connecting to a server using an SSH key from a Windows client

  • Download and run the PuTTY SSH client.
  • Type the IP address or Username + IP address ( user@x.x.x.x ) of the destination server under the 'Host Name' field on the 'Session' category.
  • Navigate to the 'Connection -> SSH -> Auth' category (left-hand side).
  • Click 'Browse.' near 'Private key file for authentication'. Choose the private key file (ending in .ppk) that you generated earlier with PuTTYgen.
  • Click 'Open' to initiate the connection.
  • When finished, end your session by pressing Ctrl+d.

Connecting to a server using an SSH key from a Linux client

  • Check that your Linux operating system has an SSH client installed ( which ssh ). If a client is not installed, you will need to install one.
  • Initiate a connection: ssh -i /path/to/id_rsa user@x.x.x.x
  • When finished, end your session by pressing Ctrl+d.
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This article provides an overview of running a FreeBSD virtual machine in Azure.

Overview

FreeBSD for Microsoft Azure is an advanced computer operating system used to power modern servers, desktops, and embedded platforms.

Microsoft Corporation is making images of FreeBSD available on Azure with the Azure VM Guest Agent pre-configured. Currently, the following FreeBSD versions are offered as images by Microsoft:

The agent is responsible for communication between the FreeBSD VM and the Azure fabric for operations such as provisioning the VM on first use (user name, password or SSH key, host name, etc.) and enabling functionality for selective VM extensions.

As for future versions of FreeBSD, the strategy is to stay current and make the latest releases available shortly after they are published by the FreeBSD release engineering team.

Create a FreeBSD VM through Azure CLI on FreeBSD

First you need to install Azure CLI though following command on a FreeBSD machine.

If bash is not installed on your FreeBSD machine, run following command before the installation.

If python is not installed on your FreeBSD machine, run following commands before the installation.

During the installation, you are asked Modify profile to update your $PATH and enable shell/tab completion now? (Y/n). If you answer y and enter /etc/rc.conf as a path to an rc file to update, you may meet the problem ERROR: [Errno 13] Permission denied. To resolve this problem, you should grant the write right to current user against the file etc/rc.conf.

Now you can sign in to Azure and create your FreeBSD VM. Below is an example to create a FreeBSD 11.0 VM. You can also add the parameter --public-ip-address-dns-name with a globally unique DNS name for a newly created Public IP.

Then you can sign in to your FreeBSD VM through the ip address that printed in the output of above deployment.

VM extensions for FreeBSD

Following are supported VM extensions in FreeBSD.

VMAccess

The VMAccess extension can:

  • Reset the password of the original sudo user.
  • Create a new sudo user with the password specified.
  • Set the public host key with the key given.
  • Reset the public host key provided during VM provisioning if the host key is not provided.
  • Open the SSH port (22) and restore the sshd_config if reset_ssh is set to true.
  • Remove the existing user.
  • Check disks.
  • Repair an added disk.

CustomScript

The CustomScript extension can:

  • If provided, download the customized scripts from Azure Storage or external public storage (for example, GitHub).
  • Run the entry point script.
  • Support inline commands.
  • Convert Windows-style newline in shell and Python scripts automatically.
  • Remove BOM in shell and Python scripts automatically.
  • Protect sensitive data in CommandToExecute.

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Freebsd Ssh Generate Host Key

FreeBSD VM only supports CustomScript version 1.x by now.

Authentication: user names, passwords, and SSH keys

When you're creating a FreeBSD virtual machine by using the Azure portal, you must provide a user name, password, or SSH public key.User names for deploying a FreeBSD virtual machine on Azure must not match names of system accounts (UID <100) already present in the virtual machine ('root', for example).Currently, only the RSA SSH key is supported. A multiline SSH key must begin with ---- BEGIN SSH2 PUBLIC KEY ---- and end with ---- END SSH2 PUBLIC KEY ----.

Obtaining superuser privileges

Font creator for mac download. The user account that is specified during virtual machine instance deployment on Azure is a privileged account. The package of sudo was installed in the published FreeBSD image.After you're logged in through this user account, you can run commands as root by using the command syntax.

You can optionally obtain a root shell by using sudo -s.

Create ssh key linux

Known issues

The Azure VM Guest Agent version 2.2.2 has a known issue that causes the provision failure for FreeBSD VM on Azure. The fix was captured by Azure VM Guest Agent version 2.2.3 and later releases.

Freebsd Ssh Generate Host Key On Mac

Next steps

Generating A New Ssh Key

  • Go to Azure Marketplace to create a FreeBSD VM.