In this level, you will learn how to create packets and send them from one computer to another.

Pause the simulation and click on the packet that is sent from Bob's computer to Alice's computer. The information about a packet is contained in its packet headers. This is a simple packet that only lists information in the network layer. Note the two pieces of information contained in this header: srcip (the source of the packet) and dstip (the destination of the packet).

Level Objectives

To pass this level, you will need to send a packet from Alice to Bob. To do this:

• Click the + button and add a new packet
• We need to send this packet from Alice, so make sure she is selected in the From: dropdown menu.
• You need to set the srcip and dstip headers in the network layer.
  hint: restart and pause the simulator to click on packets to see what the srcip and dstip header values are set to.
• Save your new packet by pressing Add button
• Restart the simulation and click the send arrow beside the newly added packet to see it in action!