Guides & Tutorials: Securing Your Server

I have a new Centos 7 Linode and have been following this guide to secure:

https://www.linode.com/docs/security/se … our-server">https://www.linode.com/docs/security/securing-your-server

Adding a New User

Works fine

Using SSH Key Pair Authentication

In a terminal on my Mac, changing example_user, IP address as appropriate:

ssh-keygen

scp ~/.ssh/idrsa.pub exampleuser@123.456.78.90:

In a terminal to my server

mkdir .ssh

mv idrsa.pub .ssh/authorizedkeys

chown -R exampleuser:exampleuser .ssh

chmod 700 .ssh

chmod 600 .ssh/authorized_keys

The guide says:

"The SSH keys have been generated, and the public key has been installed on your Linode. You’re ready to use SSH key pair authentication! To try it, log out of your terminal session and then log back in. The new session will be authenticated with the SSH keys and you won’t have to enter your account password."

I cannot get past this stage. Any new session is not authenticated with the SSH keys. Any guidance what I am doing wrong?

Thanks