Assignment task: An organization has 2 server computers and a number of desktop computers and a few printers. All of them are connected together via an internal network, and the network is connected to the Internet via the border router of the organization. From the outside of the organization, on the Internet, only these 2 server computers are visible. One of them is the email server (IP address: e1.e2.e3.e4), and the other one is the web server (IP address: w1.w2.w3.w4). In other words, only these 2 server computers accept requesting incoming network traffic. All desktop computers are allowed to access the Internet, without any restriction. Therefore, they accept responding incoming network traffic, but not accepting any requesting incoming network traffic.
Please design the network and draw the network diagram. You have the freedom to assume the internal network structure. In the diagram, in addition to the 2 servers, you should also include a few desktop computers and a printer. Please explain the rationale on why you put a computer or a printer in its designated location, 1 example for each location. A subnet (or a segment) is regarded as the same location. (Hint: a firewall or a few firewalls, depending on your design, are needed to regulate the network traffic)
Please write down the firewall rules to fulfill the access requirement of the organization. Please also explain the meaning of each firewall rule. If you have multiple firewalls, you should explain to which firewall each of the rules belongs. Below is a set of sample firewall rules. Please follow the sample firewall rule (below) format to write down your firewall rules. Please also be advised that the order of the rules matters.