(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'''
 - Make sure virtual hard disk file name in following format
 '''pc.'your domain'.ws.learn.ac.lk'''
 - 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'''. 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)]]