SSH Server Ubuntu 21.10 Installation – Step-by-step

Getting-Started

3. 3. Launching SSH Server

   Finally, Start SSH Server
   With:

   sudo service ssh start

   To enable it at Boot:

   sudo service ssh enable

   In case, to Stop it:

   sudo service ssh stop

   To Enable Remote Access from a Client.
   Output the Client Key:

   cat ~/.ssh/id_rsa.pub

   Select & Ctrl+Shift+c to Copy on Terminal.
   Then Append it to the Server authorized_keys File:
   (Here for simplicity with the nano Editor, but you can just use Anyone.)

   sudo nano ~/.ssh/authorized_keys

   Ctrl+x to Save & Exit from nano Editor.
   Last, Test your SSH Connection locally:

   ssh `whoami`@localhost

   The `whoami` Command just to Output your Username.
   Remotely instead:

   ssh `whoami`@[MYSERVERIP]

   Replace “[MYSERVERIP]” with that you can find in: How to Check IP Guide.
   Access with your User Password.
   To Quit:

   exit

4. 4. SSH Server Getting-Started Guide

   Get Started with SSH Server for Ubuntu GNU/Linux

   SSH Server QuickStart Guide on Ubuntu

   Getting-Started with SSH Server on Ubuntu

So Now I am truly Happy if My Guide could Help you to Quick-Start with SSH Server on Ubuntu 21.10 Impish!