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Oct 16, 2017  Set up SSH for your Linux/Unix-based Lightsail instances. Last updated: October 16, 2017. Secure SHell (SSH) is a protocol for securely connecting to a virtual private server (or Lightsail instance).SSH works by creating a public key and a private key. Create AWS Key Pair. The easiest way to get started with AWS is to create a 'root' key pair. Go to the AWS Console and log in.; Click on your name at the top right. First of all, it may be too much if you're new to AWS The tutorial you're using equiped servers with Terraform, which is a 3rd party tool out of AWS. You may consider a much more intuitive turtorial to create your first instance from AWS console, and AWS will help to generate a key-pair, and you will have the full control. Generating a Secure Shell (SSH) Public/Private Key Pair; Generating a Secure Shell (SSH) Public/Private Key Pair. Several tools exist to generate SSH public/private key pairs. The following sections show how to generate an SSH key pair on UNIX, UNIX-like and Windows platforms.

1. Aws Ssh Key Pair

The PuTTYgen program is part of PuTTY, an open source networking client for the Windows platform.

Aws Ssh Key Pair

1. Download and install PuTTY or PuTTYgen.

   To download PuTTY or PuTTYgen, go to http://www.putty.org/ and click the You can download PuTTY here link.

   Generally, a new key and IV should be created for every session, and neither the key nor IV should be stored for use in a later session.To communicate a symmetric key and IV to a remote party, you would usually encrypt the symmetric key by using asymmetric encryption. Anyone that you allow to decrypt your data must possess the same key and IV and use the same algorithm. Whenever you create a new instance of one of the managed symmetric cryptographic classes using the parameterless constructor, a new key and IV are automatically created. Sending the key across an insecure network without encrypting it is unsafe, because anyone who intercepts the key and IV can then decrypt your data. How is the private key generated.

2. Run the PuTTYgen program.
3. Set the Type of key to generate option to SSH-2 RSA.
4. In the Number of bits in a generated key box, enter 2048.
5. Click Generate to generate a public/private key pair.

   As the key is being generated, move the mouse around the blank area as directed.

6. (Optional) Enter a passphrase for the private key in the Key passphrase box and reenter it in the Confirm passphrase box.

   Note:

   While a passphrase is not required, you should specify one as a security measure to protect the private key from unauthorized use. When you specify a passphrase, a user must enter the passphrase every time the private key is used.

7. Click Save private key to save the private key to a file. To adhere to file-naming conventions, you should give the private key file an extension of .ppk (PuTTY private key).

   Note:

   The .ppk file extension indicates that the private key is in PuTTY's proprietary format. You must use a key of this format when using PuTTY as your SSH client. It cannot be used with other SSH client tools. Refer to the PuTTY documentation to convert a private key in this format to a different format.
8. Select all of the characters in the Public key for pasting into OpenSSH authorized_keys file box.

   Make sure you select all the characters, not just the ones you can see in the narrow window. If a scroll bar is next to the characters, you aren't seeing all the characters.

9. Right-click somewhere in the selected text and select Copy from the menu.
10. Open a text editor and paste the characters, just as you copied them. Start at the first character in the text editor, and do not insert any line breaks.
11. Save the text file in the same folder where you saved the private key, using the .pub extension to indicate that the file contains a public key.
12. If you or others are going to use an SSH client that requires the OpenSSH format for private keys (such as the ssh utility on Linux), export the private key:
    1. On the Conversions menu, choose Export OpenSSH key.
    2. Save the private key in OpenSSH format in the same folder where you saved the private key in .ppk format, using an extension such as .openssh to indicate the file's content.