(Note down the location of vdi image file when virtualbox flashes it on the screen)

=== Setting up Network Interface ===

 - Select the VM from left panel on Virtual box, right click and open '''Settings'''
 - Click on the '''Network''' title
 - On '''Adapter 1''' While ''Enable'' Network Adapter selected choose Attached to be '''Bride Adapter'''. This virtual interface will work as the WAN port of the firewall (Can be connect from out side).= Linux Hands - On =

Through this hands-on you will install Ubuntu Server on a vm and you will make additional two clones of the installed ubuntu server for your lab sessions in next two days. 

== Setting up virtualbox ==
=== Installation of virtualbox and Downloading Ubuntu iso image ===
- Download and install virtualbox 6.x
- [https://ubuntu.com/download/server] Ubuntu image from the website (Ubuntu Server 20.04.2 LTS)


=== Creating the VM ===
 - Start virtualbox and Click on '''New''' button to create new virtual machine
 - Enter name of the VM as: '''LibreNMS Or iCinga'''. 


- Select OS Type: '''Linux'''
 - Select Version: '''Ubuntu (64-bit)'''
 - Then click on '''Continue''' button
 - Set VM's memory size to '''4096MB''' and click on Continue button
 - Set VM's hard disk option to '''Create a virtual hard disk now''' and then click on '''Continue'''
 - Select disk type to '''VDI'''
 - Select storage type to '''Fixed size''' and '''Continue'''
 - adjust the disk size to '''50.0GB''' and click on '''Create''' to create the VM

This might take couple of minutes

(Note down the location of vdi image file when virtualbox flashes it on the screen)

=== Setting up Network Interface ===

 - Select the VM from left panel on Virtual box, right click and open '''Settings'''
 - Click on the '''Network''' title
 - On '''Adapter 1''' While ''Enable'' Network Adapter selected choose Attached to be '''Bride Adapter''', then select the name of the network (please select only LAN connection, later it will help you to access switches) This virtual interface will work as the WAN port of the firewall (Can be connect from out side).

[[Image(network_bidge_adapter.png, 600px, nolink)]]

=== Setting up boot device and Booting===

 - Click on '''Storage''' title and select '''CD ROM icon''' with Caption "Empty" under the '''Controller:IDE''', Click on CD ROM icon under the '''Attribute''' on the left side to select
 - Choose '''Virtual Optical Disk File'''
 - Locate the '''Ubuntu CD Image''' file you downloaded from the LEARN ftp. Press OK to close the settings window.
 - Right click on VM and select Start to make a '''Normal Start'''. You should now see a separate window with Installation screen"

== Installation ==

=== Initial Installation options ===

 - Select '''English''' as language for the installation wizard
 - Select '''Ubuntu Server'''
 - Select '''English''' for VM's OS language
 - Select location by '''Others->Asia->Sri Lanka'''
 - Keep locales as default '''United States'''
 - Press '''No''' for configure Keyboard
 - Select '''English (US)''' for country of origin for the keyboard
Now it might take sometime to detect the hardware and load the necessary Linux modules