# Press windows key or click the top left, type 'Term'. Open 'Terminal'

sudo -i

apt-get update -y && apt-get -y install openssh-server
passwd root

# Type a password, press enter. Retype it, press enter

sed -i 's/PermitRootLogin .*/PermitRootLogin yes/g' /etc/ssh/sshd_config

service ssh restart

# Get their IP
curl ifconfig.co

# Setup port forwarding on their router to get access
# ssh root@ip
# Enable public key auth only, create a new user and disable root login when you have gained access