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Term Paper Project: Designing a
Secure Network
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 user534@yahoo.com. 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
1a.
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)
1b.
Explain
each network device’s function and your specific configuration of each
networking device.
1c.
Design
and label the bandwidth availability or capacity for each wired connection.
Part 2
2a.
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 jonny.hill@Corp534.com sends an email to user534@yahoo.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.
2b.
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 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.
2c.
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.
i.
Document
and label the diagram showing protocols and path of the data flow as data
traverses through your network from source to destination.
ii.
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.
iii.
Show
user authentication when necessary.
2d.
Explain
how your overall design protects the organization from both inside and outside
attacks. Give examples.
2e.
Explain
how your layered design compensates for possible device failures or breaches in
network security.
2f.
Determine
whether any possible bottlenecks exist in your design.
2g.
Explain
how to make the file transfer process more secure.
Part 3
- 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.
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