This term paper involves putting together the various concepts learned throughout this course. You are tasked with designing the most secure network possible, keeping in mind your goal of supporting three (3) IT services: email, file transfer (centralized), and VPN. Your first step is to design a single network capable of supporting there three (3) different services. Once you have fully designed your network, you will need to provide three (3) workflow diagrams explaining how your designed network handles the three (3) different transactions. The first is an internal user sending an email using his / her corporate email address to a user on the Yahoo domain with an arbitrary address of user53 [email protected] The second workflow diagram should show a user initiating an FTP session from inside your network to the arbitrary site of ftp.netneering.com. The third workflow is an externally located employee initiating a VPN session to corporate in order to access files on the Windows desktop computer, DT-Corp534-HellenS, at work. Write a ten to fifteen (10-15) page paper in which you complete the following three (3) Parts. Note: Please use the following page breakdown to complete your assignment: Overall network diagram: One (1) page Datapath diagrams: Three (3) pages (one for each diagram) Write-up: six to ten (6-10) pages Part 1 Using Microsoft Visio or its open source alternative, create a diagram showing the overall network you’ve designed from the user or endpoint device to the Internet cloud, and everything in between, in which you: Follow the access, core, distribution layer model. Include at a minimum: Authentication server (i.e. Microsoft Active Directory) Routers Switches (and / or hubs) Local users Remote users Workstations Files share (i.e. CIFS) Mail server Web servers (both internal and external) Firewalls Internet cloud Web proxy Email proxy FTP server (for internal-to-external transport) Explain each network device’s function and your specific configuration of each networking device. Design and label the bandwidth availability or capacity for each wired connection. Part 2 Using Microsoft Visio or its open source alternative, create a Datapath Diagram for the following scenario: Local user sends email to a Yahoo recipient. Local (corporate) user having email address [email protected] sends an email to [email protected] Document and label the diagram showing protocols and path of the data flow as data traverses through your network from source to destination.  Include path lines with arrows showing directions and layer 1, 2, 3, 4, 5, 6, and 7 (OSI) protocols that are used for each flow.  Show user authentication when necessary. Using Microsoft Visio or its open source alternative, create a Datapath Diagram for the following scenario: Local user, Jonny Hill, transfers file using ftp through the Internet to another company’s site ( ftp.netneering.com ). He has to access the secure shell using his active directory credentials to.

1. This term paper involves putting together the various concepts
learned throughout this course. You are tasked with designing
the most secure network possible, keeping in mind your goal of
supporting three (3) IT services: email, file transfer
(centralized), and VPN. Your first step is to design a single
network capable of supporting there three (3) different services.
Once you have fully designed your network, you will need to
provide three (3) workflow diagrams explaining how your
designed network handles the three (3) different transactions.
The first is an internal user sending an email using his / her
corporate email address to a user on the Yahoo domain with an
arbitrary address of user53
[email protected]
The second workflow diagram should show a user initiating an
FTP session from inside your network to the arbitrary site of
ftp.netneering.com. The third workflow is an externally located
employee initiating a VPN session to corporate in order to
access files on the Windows desktop computer, DT-Corp534-
HellenS, at work.
Write a ten to fifteen (10-15) page paper in which you
complete the following three (3) Parts. Note: Please use the
following page breakdown to complete your assignment:
Overall network diagram: One (1) page
Datapath diagrams: Three (3) pages (one for each diagram)
Write-up: six to ten (6-10) pages
Part 1
Using Microsoft Visio or its open source alternative, create a
diagram showing the overall network you’ve designed from the
user or endpoint device to the Internet cloud, and everything in
between, in which you:
Follow the access, core, distribution layer model.
Include at a minimum:
Authentication server (i.e. Microsoft Active Directory)
Routers

2. Switches (and / or hubs)
Local users
Remote users
Workstations
Files share (i.e. CIFS)
Mail server
Web servers (both internal and external)
Firewalls
Internet cloud
Web proxy
Email proxy
FTP server (for internal-to-external transport)
Explain each network device’s function and your specific
configuration of each networking device.
Design and label the bandwidth availability or capacity for each
wired connection.
Part 2
Using Microsoft Visio or its open source alternative, create a
Datapath Diagram for the following scenario:
Local user sends email to a Yahoo recipient. Local (corporate)
user having email address
[email protected]
sends an email to
[email protected]
Document and label the diagram showing protocols and path of
the data flow as data traverses through your network from
source to destination.
Include path lines with arrows showing directions and layer 1,
2, 3, 4, 5, 6, and 7 (OSI) protocols that are used for each flow.
Show user authentication when necessary.
Using Microsoft Visio or its open source alternative, create a
Datapath Diagram for the following scenario:
Local user, Jonny Hill, transfers file using ftp through the
Internet to another company’s site (
ftp.netneering.com

3. ). He has to access the secure shell using his active directory
credentials to authenticate to the ftp server (linux running
Redhat) on the DMZ. He needs to transfer files from his desktop
across the Internet to
ftp.netneering.com
.
Document and label the diagram showing protocols and path of
the data flow as data traverses through your network from
source to destination.
Include path lines with arrows showing directions and layer 1,
2, 3, 4, 5, 6, and 7 (OSI) protocols that are used for each flow.
Show user authentication when necessary.
Using Microsoft Visio or its open source alternative, create a
Datapath Diagram for the following scenario:
Remote user, Hellen Stover, connects via VPN from home
through the Internet to her corporate desktop, DT-Corp534-
HellenS. Hellen uses a browser to initiate her VPN connection.
By browsing to
https://VPNaccess.corp534.com
, she arrives at a login page where she needs to authenticate
using her Active Directory credentials before the VPN tunnel is
built.
Document and label the diagram showing protocols and path of
the data flow as data traverses through your network from
source to destination.
Include path lines with arrows showing directions and layer 1,
2, 3, 4, 5, 6, and 7 (OSI) protocols that are used for each flow.
Show user authentication when necessary.
Explain how your overall design protects the organization from
both inside and outside attacks. Give examples.
Explain how your layered design compensates for possible
device failures or breaches in network security.
Determine whether any possible bottlenecks exist in your
design.
Explain how to make the file transfer process more secure.
Part 3

4. Use at least three (3) quality resources in this assignment. Note:
Wikipedia and similar Websites do not qualify as quality
resources.
Your assignment must follow these formatting requirements:
Be typed, double spaced, using Times New Roman font (size
12), with one-inch margins on all sides; citations and references
must follow APA or school-specific format. Check with your
professor for any additional instructions.
Include a cover page containing the title of the assignment, the
student’s name, the professor’s name, the course title, and the
date. The cover page and the reference page are not included in
the required assignment page length.
Include charts or diagrams created in Visio or an equivalent
such as Dia. The completed diagrams / charts must be imported
into the Word document before the paper is submitted.
The specific course learning outcomes associated with this
assignment are:
Explain the essentials of Transmission Control Protocol /
Internet Protocol (TCP / IP) behavior and applications used in
IP networking.
Identify network security tools and discuss techniques for
network protection
Describe the foundational concepts of VPNs.
Design a secure network to address a business problem.
Use technology and information resources to research issues in
network security design.
Write clearly and concisely about Advanced Network Security
Design topics using proper writing mechanics and technical
style conventions.