# 5. Configuring the OpenSSH server

To enable the OpenSSH server (`sshd`) to retrieve users' public keys for authentication, you will need to modify the OpenSSH server configuration file (`sshd_config`). To do this, use your favorite text editor and add the following lines to the bottom of the `/etc/ssh/sshd_config` file.

`AuthorizedKeysCommand /opt/k9/bin/k9-ssh --user=%u`

`AuthorizedKeysCommandUser key9`

Once you have completed editing the file,  restart the OpenSSH service:

`systemctl restart ssh`