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 https://www.puttygen.com/.

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!

Please rate this article to help us improve our Knowledge Base.

1 0