For this project, it aims to create on-premise network infrastructure to configure the machines between them.
if you are on VirtualBox (osx) create a file named networks.conf at /etc/vbox/networks.conf on your computer write :
<* 10.242.0.0/16>
in the file to allow your virtuelBox to use this IP adress range.
Once you're the application, go to: file then click on Host Network Manager
then click on create then type the following congifgurations:
'Configure manually'
'Disable DHCP'
'IP v4 Adress: 10.242.0.0'
'IP v4 Network Mask: 255.255.0.0'
Create all VM on debian 11 Bullseye
go on each VM
change networks settings at: Settings -> Network -> adapter 1
in the menu of <Attached to> choose <Host-only Adaptater> and below choose your networks name if it's not already set
For gate way add a second adapter and set <Bridged Adapter> in <Attached to> menu's
2.1 : create your servers
for each serveur :
set hostname:
sudo hostnamectl set-hostname <Serveur_Host_Name>
edit hostname resolution:
sudo nano /etc/hosts
127.0.1.1 <Serveur_Host_Name>
set fix ip:
sudo nano /etc/network/interfaces
Definition:
<interface>= interface connect to host only
<interface2>= interface connect to briged
on GateWay add:
# The primary network interface
auto <interface2>
iface <interface2> inet dhcp
# The second network interface
auto <interface>
iface <interface> inet static
address 10.242.0.1/24
On the other :
auto <interface>
iface <interface> inet dhcp
to
iface <interface> inet static
address <ip_of_serv>
gateway 10.242.0.1
on gateway active ip forwarding.
edit sudo nano /etc/sysctl.conf Add the following lines to the bottom of the file
net.ipv4.ip_forward = 1
Run the following command to active the change without restart:
sysctl -p
if you want to check if ipforwarding works type this commande below and must be return 1 :
cat /proc/sys/net/ipv4/ip_forward
on Gateway :
sudo iptables -t nat -A POSTROUTING ! -d 10.242.0.0/24 -o enp0s8 -j MASQUERADE
This command enables the NAT network functionality on the gateway
© Irene KAEWKLIN, Charles COSTE, Aymeric GIRAULT