Setting up a SSH config

With reference to the discussion with @Keith on hardware keys, a very basic setup for ssh involves installing (on Ubuntu as a point of reference) openssh-client and openssh-server packages. Once installed (especially on the server) immediately edit;
Search for “assword” and make sure you have;
PasswordAuthentication no
If you changed anything, do service ssh restart. This will prevent anyone from logging into that system just using a username and password. Next, go to your client machine and do;
To get going, accepting the defaults should work for you. Next, on the server system, go to the user account you will be logging in to and;
sudo su - user
mkdir .ssh
cd .ssh
touch authorized_keys2
chmod 600 authorized_keys2
edit authorized_keys2
Then paste in the contents of the public key from your client machine, i.e. the contents of;
At this point, save authorized_keys and you should (!) be good to go, on your client machine;
ssh user@ip_address
Where user is the name of the user you set up on the server, and ip_address is the name or IP address of the server. The client machine should now have a working shell session on the server machine. If you don’t want to use the ip_address, all you need do is add an entry in /etc/hosts;  server_name
(where is your real IP address, and server_name is the name you want to reference the server as) I may have skipped something or something isn’t clear, if you try this and it breaks, let me know and I’ll attempt to improve it. 2 posts - 2 participants Read full topic

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Mad Penguin

Mad Penguin is a Linux forum administrator and moderator.