Network

ip address setting




https://www.swiftstack.com/docs/install/configure_networking.html


to block every port except ssh

https://serverfault.com/questions/363741/how-can-i-block-all-but-three-ports-in-ubuntu


useradd to add account


enable ssh

http://linux-sys-adm.com/how-to-install-and-configure-ssh-on-ubuntu-server-14.04-lts-step-by-step/