Info Lab Work

Introduction The task of identifying risks in an IT environment can become overwhelming. Once your mind starts asking “what if…?” about one IT area, you quickly begin to grasp how many vulnerabilities exist across the IT spectrum. It may seem impossible to systematically search for risks across the whole IT environment.

Thankfully, a solution is at hand that simplifies identifying threats and vulnerabilities in an IT infrastructure. That method is to divide the infrastructure into the seven domains: Wide Area Network (WAN), Local Area Network-to-Wide Area Network (LAN-to-WAN), Local Area Network (LAN), Workstation, User, System/Application, and Remote Access. Systematically tackling the seven individual domains of a typical IT infrastructure helps you organize the roles, responsibilities, and accountabilities for risk management and risk mitigation.

In this lab, you will identify known risks, threats, and vulnerabilities, and you will organize them. Finally, you will map these risks to the domain that was impacted from a risk management perspective.

Learning Objectives Upon completing this lab, you will be able to:

• Identify common risks, threats, and vulnerabilities found throughout the seven domains of a typical IT infrastructure.

• Align risks, threats, and vulnerabilities to one of the seven domains of a typical IT infrastructure.

• Given a scenario, prioritize risks, threats, and vulnerabilities based on their risk impact to the organization from a risk-assessment perspective.

• Prioritize the identified critical, major, and minor risks, threats, and software vulnerabilities found throughout the seven domains of a typical IT infrastructure.

Lab #1 Identifying Threats and Vulnerabilities in an IT Infrastructure

2 | LAB #1 Identifying Threats and Vulnerabilities in an IT Infrastructure

Deliverables Upon completion of this lab, you are required to provide the following deliverables to your instructor:

Lab Report file; 2. Lab Assessments file.

Hands-On Steps

uNote: This is a paper-based lab. To successfully complete the deliverables for this lab, you will need access to Microsoft® Word or another compatible word processor. For some labs, you may also need access to a graphics line drawing application, such as Visio or PowerPoint. Refer to the Preface of this manual for information on creating the lab deliverable files.

On your local computer, create the lab deliverable files.
Review the Lab Assessment Worksheet. You will find answers to these questions as you proceed through the lab steps.
Review the seven domains of a typical IT infrastructure (see Figure 1).

Figure 1 Seven domains of a typical IT infrastructure

In your Lab Report file, describe how risk can impact each of the seven domains of a typical IT infrastructure: User, Workstation, Local Area Network (LAN), Local Area Network-to-Wide Area Network (LAN-to-WAN), Wide Area Network (WAN), Remote Access, and System/Application domains.
Review the left-hand column of the following table of risks, threats, and vulnerabilities that were found in a health care IT infrastructure servicing patients with life-threatening conditions:

4 | LAB #1 Identifying Threats and Vulnerabilities in an IT Infrastructure

Risks, Threats, and Vulnerabilities Primary Domain Impacted Unauthorized access from public Internet Hacker penetrates IT infrastructure through modem bank

Communication circuit outages Workstation operating system (OS) has a known software vulnerability

Denial of service attack on organization’s e- mail server

Remote communications from home office Workstation browser has software vulnerability Weak ingress/egress traffic-filtering degrades performance

Wireless Local Area Network (WLAN) access points are needed for LAN connectivity within a warehouse

Need to prevent rogue users from unauthorized WLAN access

Doctor destroys data in application, deletes all files, and gains access to internal network

Fire destroys primary data center Intraoffice employee romance gone bad Loss of production data server Unauthorized access to organization-owned workstations

LAN server OS has a known software vulnerability

Nurse downloads an unknown e-mail attachment

Service provider has a major network outage A technician inserts CDs and USB hard drives with personal photos, music, and videos on organization-owned computers

Virtual Private Network (VPN) tunneling between the remote computer and ingress/egress router

uNote: Some risks will affect multiple IT domains. In fact, in real-world environments, risks and their direct consequences will most likely span across several domains. This is a big reason to implement controls in more than one domain to mitigate those risks. However, for the exercise in step 6 that follows, consider and select only the domain that would be most affected.

Subsequent next steps in the real world include selecting, implementing, and testing controls to minimize or eliminate those risks. Remember that a risk can be responded to in one of four ways: accept it, treat it (minimize it), avoid it, or transfer it (for example, outsource or insurance).

In your Lab Report file, complete the table from the previous step by identifying which of the seven domains of a typical IT infrastructure will be most impacted by each item in the table’s left-hand column and explain why.

uNote: This completes the lab. Close the Web browser, if you have not already done so.

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Info Lab Work

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