====== Setup ======
===== Server Setup =====
  * Login to the server via SSH as root
  * Install sudo, create the main user, and add him to the sudoers group<code># apt install sudo
adduser <username> sudo
</code>
  * (VPS) change the machine name:<code>sudo hostnamectl set-hostname <new-name>
sudo edit /etc/hosts</code>
  * enable //force_color_prompt=yes// in file ''~/.bashrc''
  * copy ''/home/user/.bashrc'' to ''/root'' and modify PS1 prompt color (//32m// --> //31m//)

===== Tuning =====
  * [[deb13:tuning#swap_behavior|Swap behavior]]

===== Network =====
  * In a minimal install without GUI is no NetworkManager present. Configure the static ip address first to be able to access the host.
  * Modify ''/etc/network/interfaces'':<code>auto enp0s3
iface enp0s3 inet static
    address 192.168.3.150/24
    gateway 192.168.3.1
    dns-nameservers 192.168.3.1</code>
  * Add the nameserver to ''/etc/resolv.conf'':<code>nameserver 192.168.3.1</code>
  * Reboot with either of the following commands:<code>sudo reboot
sudo shutdown -r now</code>
  * Don't forget to bridge the interface if it is a VirtualBox virtual machine.
===== Security =====
  * Configure [[deb9:ssh|SSH Access]]
  * Install [[deb9:ufw|UFW Firewall]]
  * Disable root login by changing file ''/etc/passwd'' from line 1 to line 2<code>root:x:0:0:root:/root:/bin/bash
root:x:0:0:root:/root:/sbin/nologin</code>

===== Install and configure packages =====
  * Additional packages<code>$ sudo apt update
$ sudo apt install vim
$ sudo apt install zip
$ sudo apt install rename
$ sudo apt install rsync
$ sudo apt install curl</code>
  * Change visudo editor<code>$ sudo update-alternatives --config editor</code>
  * Check install<code>apt-cache policy <packagename></code>