Assignment : Defense in Depth

Oftentimes, the process of implementing security opens one's eyes to other forms of security they hadn't thought of previously. Well, in this assignment you should experience just that. This assignment focuses on a model of implementing security in layers which in many cases requires a network that is designed accordingly. In this assignment, you are to design a network to incorporate the following:

Corporate Site (Chicago)
All servers exist here (Web server, file server, print server, mail server, ftp server)
Connection to the Internet (50mbps)
300 employees who only need access to local corporate resources and the Internet
1 Remote Site (8 miles away)
20 employees who need access to all resources at corporate plus the Internet
Connection to the Internet (3mbps)
Write a four to five (4-5) page paper in which you:
Using Microsoft Visio or its open source alternative, design a network diagram, particularly with defense in depth in mind which depicts:
All network devices used (routers, switches, hubs, firewalls, VPNs, proxies, and / or others)
The interconnections between network devices
The end user (client) devices (desktops, laptops)
The Internet cloud, generically, to represent your network's interface to the Internet