I was in need of a simple small PXE server (DHCP and TFTP). PXE server on ethernet, management via wifi.

• Old first gen. RPI.
• SDCard, large enough to host images / files.
• Wifi dongle (for management).
• Most of the commands below need to be run as root.

• Download latest Raspbian Lite (Stretch)
• Validate download:

  # From website:
  SHA-256:
  e942b70072f2e83c446b9de6f202eb8f9692c06e7d92c343361340cc016e0c9f
  
  sha256sum 2017-11-29-raspbian-stretch-lite.zip 
  e942b70072f2e83c446b9de6f202eb8f9692c06e7d92c343361340cc016e0c9f  2017-11-29-raspbian-stretch-lite.zip

• Check if partitions already have been mounted and unmount those.

  lsblk # or mount command
  umount /dev/sdX{1,2}

• Copy image to SDCard:

  unzip 2017-11-29-raspbian-stretch-lite.zip
  dd if=2017-11-29-raspbian-stretch-lite.img of=/dev/sdX bs=1M && sync

• Mount partitions (unmount first if auto-mounted under /run/media/…):

  mount /dev/sdX2 /mnt
  mount /dev/sdX1 /mnt/boot

• Enable SSH:

  touch /mnt/boot/ssh

• Generate wifi config:

  wpa_passphrase YOUR_SSID YOUR_PASSPHRASE >> /mnt/etc/wpa_supplicant/wpa_supplicant.conf
  
  # Remove the plaintext passphrase, change country
  vi /mnt/etc/wpa_supplicant/wpa_supplicant.conf

• Set hostname:

  echo pxe >/mnt/etc/hostname

• unmount partitions

• Boot the RPI with the above prepared SDcard.
• If everything went well, it will connect to your wifi network.
• Log in, using SSH, with username and password:pi:raspberry.

  ssh pi@pxe

• Change user pi password. Or create a new account and delete the pi user.
• Update the OS:

  sudo su -
  apt-get update
  apt-get upgrade

• Configure the RPI:

  raspi-config
  
  - Boot options: console
  - Locale
  - Timezone
  - Expand filesystem

• Reboot
• Check for new firmware:

  rpi-update

• Install and configure uncomplicated firewall

  apt-get install ufw
  ufw allow ssh
  ufw allow in on eth0 from any port 68 to any port 67 proto udp
  ufw allow in on eth0 from any to any proto udp port 69
  
  ufw default deny
  ufw enable
  
  modprobe nf_conntrack_tftp # temporary, line below is for loading at boot
  echo "nf_conntrack_tftp" >> /etc/modules-load.d/modules.conf

• Disable unnecessary services:

  systemctl disable avahi-daemon --now

• Configure static IP address on network interface:

  cat >> /etc/dhcpcd.conf <<EOF
  interface eth0
  static ip_address=10.0.0.1/24
  EOF
  
  systemctl daemon-reload
  systemctl restart dhcpcd

• Install packages:

  apt-get install dnsmasq syslinux-common pxelinux

• Configure dnsmasq:

  cat > /etc/dnsmasq.d/server.conf <<EOF
  no-dhcp-interface=wlan0
  
  dhcp-range=eth0,10.0.0.10,10.0.0.100
  
  enable-tftp
  tftp-root=/var/lib/tftp
  
  # For BIOS based systems
  dhcp-boot=pxelinux.0
  
  EOF
  
  mkdir /var/lib/tftp
  
  systemctl restart dnsmasq
  
  mkdir -p /var/lib/tftp/pxelinux.cfg
  
  
  ln -s /usr/lib/PXELINUX/pxelinux.0 /var/lib/tftp/
  ln -s /usr/lib/syslinux/modules/bios/ldlinux.c32 /var/lib/tftp/
  ln -s /usr/lib/syslinux/modules/bios/menu.c32 /var/lib/tftp/
  ln -s /usr/lib/syslinux/modules/bios/libutil.c32 /var/lib/tftp/
  

• Memtest 5.01

  cd 
  wget http://www.memtest.org/download/5.01/memtest86+-5.01.bin.gz
  gunzip memtest86+-5.01.bin.gz
  
  mkdir -p /var/lib/tftp/memtest
  cp memtest86+-5.01.bin /var/lib/tftp/memtest/memtest86+-5.01
  
  cat > /var/lib/tftp/pxelinux.cfg/default <<EOF
  console 0
  serial 0 115200 0
  
  default memtest86
  prompt 1
  timeout 15
  
  label memtest86
    menu label Memtest86+ 5.01
    kernel /memtest/memtest86+-5.01 console=ttyS0,115200
  EOF
  
  systemctl restart dnsmasq

• Download voyage-0.11.0_amd64.iso.
• Prepare Voyage Linux 0.11 config:

  mkdir /var/lib/tftp/voyage0.11
  mount -o loop voyage-0.11.0_amd64.iso /mnt
  
  cp /mnt/live/initrd.img /var/lib/tftp/voyage0.11/
  cp /mnt/live/vmlinuz /var/lib/tftp/voyage0.11/
  cp /mnt/live/filesystem.squashfs /var/lib/tftp/voyage0.11/
  
  cat > /var/lib/tftp/pxelinux.cfg/default <<EOF
  serial 0 115200 0
  console 0
  
  default menu.c32
  prompt 15
  
  MENU TITLE PXE Menu
  TIMEOUT 30
  
  LABEL Voyage64bit
      MENU LABEL Voyage Linux 0.11 64 bit
      KERNEL /voyage0.11/vmlinuz
      APPEND initrd=/voyage0.11/initrd.img boot=live fetch=tftp://10.0.0.1/voyage0.11/filesystem.squashfs live-getty noautologin console=ttyS0,115200
  
  LABEL Voyage32bit
      MENU LABEL Voyage Linux 0.11 32 bit
      KERNEL /voyage0.11-32bit/vmlinuz
      APPEND initrd=/voyage0.11-32bit/initrd.img boot=live fetch=tftp://10.0.0.1/voyage0.11-32bit/filesystem.squashfs live-getty noautologin console=ttyS0,115200
  EOF
  

• Log in and install Voyage:

  ssh root@<dhcp-address> #pass = voyage
  
  /usr/local/sbin/format-cf.sh /dev/sdX
  mkdir /mnt/cf
  /usr/local/sbin/voyage.update
  
  
  
  
  Configuration details:              
  ----------------------                         
                                                           
  Distribution directory:   /          
                                                                
  Disk/Flash Device:        /dev/sda
  Installation Partition:   /dev/sda1                          
  Bootstrap Partition:      /dev/sda1
                                                 
  Will be mounted on:       /mnt/cf                        
                                       
  Target system profile:    ALIX                        
  Target console:           serial
  Target baud rate:         115200
  
  Bootstrap installer:      grub
  Bootstrap partition:      /dev/sda1
  
  OK to continue (y/n)? y