Portfolio Assignment: Network Security Plan

Project: Network Design and Plan

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Purpose This project provides you an opportunity to solve a comprehensive problem in firewall and VPN

implementation at various levels. You will play the role of an employee participating in the network

security update planning process in a specific business situation.

Required Source Information and Tools

Web References: Links to Web references in this Instructor Guide and related materials are subject to change without prior notice. These links were last verified on May 7, 2013.

The following tools and resources will be needed to complete this project:

 A Web browser and access to the Internet to perform research for the project  Access to the NetWitness Investigator application  Packet trace files, vulnerability scans, and associated reports (provided by your instructor)

o general_comm.pcap o encrypted_comm.pcap o nmap_scan.xml o topology_fisheye_chart.pdf o nessus_report.html

Learning Objectives and Outcomes  You will be able to apply core competencies learned throughout the course to a single project.  You will be able to analyze and apply knowledge of firewalls, VPNs, network diagrams, and

defense measures.

 You will be able to demonstrate logical reasoning and decision-making skills.

Deliverables The project is divided into two smaller assignments and one major assignment. Details for each

deliverable can be found in this document. Refer to the course Syllabus for submission dates.

 Project Part 1: Network Survey  Project Part 2: Network Design  Final Project: Network Security Plan

Project: Network Design and Plan

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Project Part 1: Network Survey

Introduction

Network defenses rely first on understanding the current configuration of hosts, services, and protocols in

use within the organization. Before it is possible to plan to change anything, you must first understand

what is present and where it is located within the network. The initial phase of any network security

realignment process involves identifying existing resources.

Scenario

You have been working as a technology associate in the information systems department at Corporation

Techs. The Corporation Techs’ management is concerned that they are losing business to a competitor

whose bids are too accurately just under the bids offered by Corporation Techs––by an exact amount. A

security firm was contracted to conduct a review of Corporation Techs' systems, identifying unauthorized

access to the Web server as a potential source of compromise due to the shared reporting and public

Web site functions. The packet trace and vulnerability scans gathered during this review are available for

your use.

The Web server provides public access to the organization's static Web site for contact information, while

sales team members in the field transfer contract and bid documents using a site secured with a logon

and password. Corporation Techs has budgeted for new networking hardware but does not want to add

additional servers due to cooling issues. Your manager has asked you to create a security plan that will

prevent unauthorized access, while making sure that both public and secured Web access remain

available.

Tasks

The data and information you need to complete this part of the project are provided to you. (See the

Required Source Information and Tools section at the beginning of this document.) In this part of the

project, you need to conduct a survey of the existing hosts, services, and protocols within Corporation

Techs' network. Specifically, you need to:

1. Access the PCAP data using NetWitness Investigator.

2. Identify hosts within the Corporation Techs’ network.

3. Identify protocols in use within the Corporation Techs’ network.

Project: Network Design and Plan

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4. Develop a list of hosts and services provided by each.

5. Create a professional report detailing the information above as the initial document for

development of the network security plan.

Write the network survey results as detailed in the instructions above.

Evaluation Criteria and Rubrics

Evaluation Parameters Percentage Weight

Did the student demonstrate an understanding of the competencies covered to date? 30 Did the student include all hosts identified within the provided packet trace? 30 Did the student include all services and protocols identified within the provided packet

trace and align them with the proper host?

30

Did the student create a professional, well-developed draft with proper grammar,

spelling, and punctuation?

10

Total 100%

Project: Network Design and Plan

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Project Part 2: Network Design

Introduction

As discussed so far in this course, the configuration of a network affects the options available for security

and network defense. Using the network survey produced during the first part of this project, together with

host vulnerability assessments and access requirements, you need to design an updated network

structure.

Scenario

You have been working as a technology associate the information systems department at Corporation

Techs for a while now. You have discovered so far that all of Corporation Techs’ computer systems share

the same Class C public IP address range, including workstations along with servers providing

authentication, e-mail, and both secure and public Web sites.

Your next task in this project is to construct a basic network design. An important requirement for the

network design is to reduce the number of public addresses needed as the subnet lease results in very

high ISP costs.

Tasks

Construct a basic network design, separating private and public services within the Corporation Techs’

network. To do so, you must:

1. Access the PCAP files using NetWitness Investigator, and browse the Nmap scan (XML format),

topology fisheye chart (PDF format), and Nessus report (HTML format).

2. Identify vulnerabilities and clear-text information transfer.

3. Conduct research and determine the best network design to ensure security of internal access

while retaining public Web site availability.

4. Identify any opportunities for reduced ISP costs through port redirection or address translation.

5. Design a network configuration, identifying network gateways, port or address redirection

systems, and the location of hosts within private and protected network segments.

6. Create a professional report detailing the information above as supportive documentation for the

network security plan.

7. Create a report that includes a basic network diagram and research results.

Project: Network Design and Plan

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Evaluation Criteria and Rubrics

Evaluation Parameters Percentage Weight

Did the student demonstrate an understanding of the competencies covered to date? 30

Did the student identify all vulnerabilities identified in the packet trace and host

vulnerability scans?

30

Did the student produce a network design that will fulfill the stated requirements,

separating private network resources and protected DMZ bastion hosts?

40

Total 100%

Project: Network Design and Plan

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Final Project: Network Security Plan

Scenario

You have been working as a technology associate in the information systems department at Corporation

Techs for three months now. You have conducted a network survey and developed a basic network

design intended to provide security for private network resources and publically exposed Web services.

Your manager specified that all information transferred between the sales team in the field and the

organizational servers must be protected against snooping. The manager also wants the secured

reporting site to be available only through the organization's private network so that an outsourced

network-based intrusion detection system (NIDS) service can log all connections.

Tasks You need to recommend a network design and identify hardening strategies intended to meet the

requirements. To do so, you must:

1. Access the PCAP and other scan data for this project.

2. Conduct research and determine the best network design to meet the stated requirements.

3. Research hardening strategies and identify recommended mitigation strategies for identified

vulnerabilities.

4. Identify mechanisms for secure network access by remote users, both in terms of secure Web

access as well as reporting access conducted using the private network.

5. Develop a network security plan including network realignment, hardening practices, and policies

for remote resource access.

6. Identify expectations from recommended changes and provide justification for each

recommendation in simple language so that primary stakeholders are able to understand it.

7. Create a professional report detailing the information above, presented as a recommendation for

a network security realignment project for Corporation Techs. Include persuasive justification and

measurable expectations as part of this recommendation.

Write the network design results as detailed in the instructions above. Your plan should be made using a

standard word processor format compatible with Microsoft Word.

Project: Network Design and Plan

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Evaluation Criteria and Rubrics

Evaluation Parameters Percentage Weight

Did the student demonstrate an understanding of the competencies covered in this

course?

30

Did the student produce a network design that will fulfill the stated requirements,

including VPN and SSL access?

20

Did the student identify effective network hardening strategies for identified

vulnerabilities?

20

Did the student provide a persuasive justification and measurable expectations for the

recommended changes?

20

Did the student create a professional, well-developed report with proper grammar,

spelling, and punctuation?

10

Total 100%