dpkg --get-selections | grep openssh

ssh-keygen to generate keys
Generating public/private rsa key pair.
Enter file in which to save the key (/home/ubuntu/.ssh/id_rsa):
/home/ubuntu/.ssh/id_rsa already exists.
Overwrite (y/n)? y
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/ubuntu/.ssh/id_rsa.
Your public key has been saved in /home/ubuntu/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:PWp6Z7apDhYGz+Uv2uu9bCUj4JabRLq9u5kWQymqlY0 ubuntu@ubuntu
The key's randomart image is:
+---[RSA 2048]----+
|                 |
|                 |
|    .  ..        |
|    .+=o .       |
|   = *=oS o      |
|  E o.B..oo..    |
| o   =o=+..+     |
|.   ..=O.+=.     |
|     .OB*B*o     |
+----[SHA256]-----+

Directory: carsonDir
Username: carson
sudo useradd -d /home/carsonDir -m carson

sudo passwd carson
Enter new UNIX password: password
Retype new UNIX password: password
passwd: password updated successfully

cd /home/carsonDir
sudo mkdir .ssh

ifconfig:
10.97.85.6

when client calls command firefox:

ubuntu@ubuntu:/home/carsonDir$ ps aux | grep firefox
carson   12218 12.0  2.8 1065948 235360 pts/18 Sl+  13:04   0:03 /usr/lib/firefox/firefox
ubuntu   12338  0.0  0.0  21292   932 pts/2    S+   13:04   0:00 grep --color=auto firefox

ubuntu@ubuntu:/home/carsonDir$ ps aux | grep firefox
carson   12345 41.6  2.4 869224 196216 pts/18  Rl+  13:04   0:01 /usr/lib/firefox/firefox
carson   12403 18.0  0.9 612672 80840 pts/18   Sl+  13:04   0:00 /usr/lib/firefox/plugin-container -greomni /usr/lib/firefox/omni.ja

after client closes firefox:

ubuntu@ubuntu:/home/carsonDir$ ps aux | grep firefox
ubuntu   12344  0.0  0.0  21292   936 pts/2    S+   13:04   0:00 grep --color=auto firefox


So the client has connected to the server.