====== Basic Lab Setup ======

For this lab sessions, we are using your host machine as the ssh client and your Ubuntu VM as the ssh server. 

Please download following applications 

  * {{https://the.earth.li/~sgtatham/putty/latest/w64/putty.exe|PuTTY}} (the Telnet and SSH client itself)

  * {{https://the.earth.li/~sgtatham/putty/latest/w64/puttygen.exe|PuTTYgen}} (an RSA and DSA key generation utility

==== Setting up virtualbox ====

=== Installation of virtualbox and Downloading Ubuntu iso image ===
 
  * Download and install virtualbox latest
  * Download Ubuntu 18.04 Ubuntu image from the {{https://ubuntu.com/download/server|official ubuntu website}}
  * Note down the location of downloaded iso file 

=== Creating the VM ===
Start virtualbox and Click on New button (at top-right) to create new virtual machine
Enter name of the VM as: **Ubuntu**.
Select OS Type: **Linux**
Select Version: **Ubuntu (64-bit)**
Then click on **Continue** button
  * Set VM's memory size to **1024MB** and click on Continue button
  * Set VM's hard disk option to **Create a virtual hard disk now** and then click on **Create**
  * Select disk type to **VDI**
  * Select storage type to **Dynamically Allocated** and **Continue**
  * adjust the disk size to **12.0GB** 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).

=== 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. 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 ===

Installation is quite simple. You can figure it out your self; (Next... Next... Next) If asked, make sure you select **Install OpenSSH Server**. We may also not need any **Feature Server snaps** at the moment.

Detailed installation guide can be found in the {{https://tutorials.ubuntu.com/tutorial/tutorial-install-ubuntu-server#0|ubuntu official documentation}}

=== Setting UP IP Addresses ===

After you install the Ubuntu OS, change the IP address.

Run the commands below to create a new network configuration file
<code>
sudo vi /etc/netplan/50-cloud-init.yaml
</code>

Press **i** to edit the file

Then configure IP addresses as shown below
<code>
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
 version: 2
 renderer: networkd
 ethernets:
   enp0s3:
            dhcp4: false
            dhcp6: false
            accept-ra: no
            addresses:
                - <Your IPv4 Address>/<subnet>
                - <Your IPv6 Address>/<subnet>
            gateway4: <Your IPv4 Gateway>
            gateway6: <Your IPv6 Gateway>
            nameservers:
                addresses:
                  - <Your IPv6 DNS>
                  - <Your IPv4 DNS>
</code>

Exit and save your changes by pressing **esc** and type **:wq**

Run the commands below.

<code>
sudo netplan apply
</code>

Then check the connectivity by pinging your favorite destination.