Knowledge Base

Secure SSH login

This guide shows how to add an SSH key to your Debian/Ubuntu VPS.

Make sure to have your public key ready. On Windows, you can use eg. Puttygen to generate one

Login to your VPS using your username and password and change to the root user using "su -".

Create a .ssh directory:

mkdir .ssh

Create an ssh public key file:

nano authorized_keys

Paste your PUBLIC! key in here. Do not paste your private key on the server.

Open the SSH config file:

nano /etc/ssh/sshd_config

Disable password authentication by adding this line:

PasswordAuthentication no

In the sshd_config you can also change the SSH port, which we recommend.

To apply the changes make sure to reload the SSH Service with:

systemctl restart sshd.service

Before you close the active ssh connection make sure to open a new one and check if you can login!

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