Ssh
From James's Wiki
sudo nano /etc/sshd_config
ssh-copy-id -i ~/.ssh/id_ecdsa.pub someuser@192.168.1.42
ssh-keygen -t ecdsa -b 521
sudo nano /etc/sshd_config
ssh-copy-id -i ~/.ssh/id_ecdsa.pub someuser@192.168.1.42
ssh-keygen -t ecdsa -b 521