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The authentication between the Backup Agent and the Backup Manager is based on RSA keys. When Backup Manager initially starts, it generates a new RSA public and private key. Note that the Backup Agent must have the public key to communicate with the Backup Manager.

The {{serverbackup-setup}} command allows you to manage keys for the Backup Manager using the following options:
* {{*\--get-key <url>*}}. The&nbsp;{{\--get-key <url>}} option retrieves a key from the Backup Manager. Make sure that&nbsp;the server where Backup Manager resides is accessible&nbsp;by&nbsp;the Backup Agent.
* {{*\--remove-key <name>*}}. Remove a key using the {{*\--remove-key <name>*}} option where {{{*}key{*}}}&nbsp;is the IP address or URL of your Backup Manager.
* {{*\--list-keys{*}}}. The {{*\--list-keys{*}}} option provides a list of&nbsp;all the installed keys.
* {{*\--stdin-key{*}}}. Use the {{*\--stdin-key{*}}} option to enter a key from {{{*}stdin{*}}}.
* {{*\--key-filename <name>*}}. The {{*\--key-filename <name>*}} option displays the name of&nbsp;the key file. This data is generated if no file name is specified.

See examples of these options on following pages:
* [Add key to Linux Backup Agent]
* [View keys added to Linux Backup Agent]
* [Uninstall the key from Linux Backup Agent]
* [Reset the public key]

&nbsp;For more information about the {{serverbackup-setup}} command, see [About the cdp-agent and serverbackup-setup tools|ServerBackup:About the cdp-agent and serverbackup-setup tools].
{excerpt:hidden=true}Provides infomration about the Linux Backup Agent authenticatio keys and how to make changes&nbsp;using the Linux Backup Agent CLI.{excerpt}