Server

SSH setup#

On the local machine generate ssh keys and copy them to the remote machine

# generate key
ssh-keygen -b 4096

# copy the public key to remote server
cat ~/.ssh/<public_key>.pub | ssh <user>@<remote_server> "mkdir -p ~/.ssh && touch ~/.ssh/authorized_keys && chmod -R go= ~/.ssh && cat >> ~/.ssh/authorized_keys"

On the remote server edit /etc/ssh/sshd_config file and add/uncomment the following:

PermitRootLogin no
PasswordAuthentication no

After that save, exit and run:

sudo systemctl restart ssh

If you cannot connect to the remote server and you are getting some errors you can check why with appending -vvv to ssh command

If you named your ssh key something other than id_rsa you need to specify the private key in ssh command like this:

ssh <user>@<server> -i ~/.ssh/<private_key>

SSH config file#

Create ~/.ssh/config file, and add the following:

Host my-awesome-remote-server
    HostName 192.168.1.1 # IP address
    User <user>
    IdentityFile ~/.ssh/<private_key>

and after that you can use ssh my-awesome-remote-server