Premium Essay

Information Security

In:

Submitted By masosoma123
Words 1220
Pages 5
Wireshark Lab: HTTP
SOLUTION
Supplement to Computer Networking: A Top-Down
Approach, 6th ed., J.F. Kurose and K.W. Ross
© 2005-21012, J.F Kurose and K.W. Ross, All Rights Reserved

The following screen shots showing the HTTP GET and HTTP reply answer these questions:
1. Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the server running? 2. What languages (if any) does your browser indicate that it can accept to the server?
3. What is the IP address of your computer? Of the gaia.cs.umass.edu server?
4. What is the status code returned from the server to your browser?
5. When was the HTML file that you are retrieving last modified at the server?
6. How many bytes of content are being returned to your browser?
7. By inspecting the raw data in the packet content window, do you see any headers within the data that are not displayed in the packet-listing window? If so, name one. Answer: no, I don’t see any in the HTTP Message below

©2013 Pearson Education, Inc. Upper Saddle River, NJ. All Rights Reserved.

Client IP address

Gaia server IP address

Client running http 1.1

languages accepted

Return status:
200

content: 128 bytes server running http
1.1
document last modified on this date

©2013 Pearson Education, Inc. Upper Saddle River, NJ. All Rights Reserved.

2. The HTTP CONDITIONAL GET/response interaction
Here’s a screenshot after doing the two identical HTTP GETs:

First GET, then a reply, then another identical GET, then a reply (304 not modified)

Answer the following questions:
8. Inspect the contents of the first HTTP GET request from your browser to the server.
Do you see an “IF-MODIFIED-SINCE” line in the HTTP GET?
9. Inspect the contents of the server response. Did the server explicitly return the contents of the file? How can you tell?
10. Now inspect the contents of the

Similar Documents

Premium Essay

Information Security Technologies

...Research Paper: Information Security Technologies by Benjamin Tomhave November 10, 2004 Prepared for: Professor Dave Carothers EMSE 218 The George Washington University This paper or presentation is my own work. Any assistance I received in its preparation is acknowledged within the paper or presentation, in accordance with academic practice. If I used data, ideas, words, diagrams, pictures, or other information from any source, I have cited the sources fully and completely in footnotes and bibliography entries. This includes sources which I have quoted or paraphrased. Furthermore, I certify that this paper or presentation was prepared by me specifically for this class and has not been submitted, in whole or in part, to any other class in this University or elsewhere, or used for any purpose other than satisfying the requirements of this class, except that I am allowed to submit the paper or presentation to a professional publication, peer reviewed journal, or professional conference. In adding my name following the word 'Signature', I intend that this certification will have the same authority and authenticity as a document executed with my hand-written signature. Signature _____Benjamin L. Tomhave________________________ Benjamin L. Tomhave 12/7/2004 1 Research Paper: Information Security Technologies by Benjamin L. Tomhave Abstract The following research paper provides analysis of thirteen (13) information security technology topics, arranged in ten (10)...

Words: 12903 - Pages: 52

Premium Essay

Information Security

...Information security, sometimes shortened to InfoSec, is the practice of defending information from unauthorized access, use, disclosure, disruption, modification, perusal, inspection, recording or destruction. It is a general term that can be used regardless of the form the data may take (electronic, physical, etc...)[1] Two major aspects of information security are: • IT security: Sometimes referred to as computer security, Information Technology Security is information security applied to technology (most often some form of computer system). It is worthwhile to note that a computer does not necessarily mean a home desktop. A computer is any device with a processor and some memory (even a calculator). IT security specialists are almost always found in any major enterprise/establishment due to the nature and value of the data within larger businesses. They are responsible for keeping all of the technology within the company secure from malicious cyber attacks that often attempt to breach into critical private information or gain control of the internal systems. • Information assurance: The act of ensuring that data is not lost when critical issues arise. These issues include but are not limited to: natural disasters, computer/server malfunction, physical theft, or any other instance where data has the potential of being lost. Since most information is stored on computers in our modern era, information assurance is typically dealt with by IT security specialists. One of...

Words: 768 - Pages: 4

Premium Essay

Information Security

...The definition of Information Security is defined as “the protection of data itself.” Kim and Solomon (2012) Information Systems can be a combination of information technology and the people that support operations, management, and decision-making. Information Security, is the protection of information and information systems from unauthorized access, disclosure, use, disruption, modification, inspection, recording, or destruction. The terms Information Security, Computer Security, and Information Assurance are frequently used interchangeably. Although these terms are interrelated often and share the common goals of protecting the confidentiality, integrity and availability of information, there are some subtle differences between them. The differences lie primarily in the approach to the subject, the methodologies used and the areas of concentration. Information security is focused on the confidentiality, integrity, and availability of data regardless of the form the data may take. While computer security focuses on ensuring the availability and correct operation of a computer system without concern for the information stored or processed by the computer. Governments, military, corporations, financial institutions, hospitals and private businesses amass a great deal of confidential information about their employees, customers, products, research, and financial status. Most of this information is now collected, processed and stored on electronic computers and transmitted across...

Words: 1040 - Pages: 5

Premium Essay

Information Security

...implementing the information security management standards, plus potential metrics for measuring and reporting the status of information security, both referenced against the ISO/IEC standards. Scope This guidance covers all 39 control objectives listed in sections 5 through 15 of ISO/IEC 27002 plus, for completeness, the preceding section 4 on risk assessment and treatment.  Purpose This document is meant to help others who are implementing or planning to implement the ISO/IEC information security management standards.  Like the ISO/IEC standards, it is generic and needs to be tailored to your specific requirements. Copyright This work is copyright © 2010, ISO27k Forum, some rights reserved.  It is licensed under the Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.  You are welcome to reproduce, circulate, use and create derivative works from this provided that (a) it is not sold or incorporated into a commercial product, (b) it is properly attributed to the ISO27k Forum at www.ISO27001security.com, and (c) derivative works are shared under the same terms as this. Ref. | Subject | Implementation tips | Potential metrics | 4. Risk assessment and treatment | 4.1 | Assessing security risks | Can use any information security risk management method, with a preference for documented, structured and generally accepted methods such as OCTAVE, MEHARI, ISO TR 13335 or BS 7799 Part 3. See ISO/IEC 27005 for general advice. | Information security risk management...

Words: 4537 - Pages: 19

Premium Essay

Information Security

...Information Security August 10, 2012 One of the biggest issues in the Information Technology field these days is information security. Today almost anything can be found on the internet. Even like how to videos on how to put in a window, break-into a house, or even hack computers. The digital age has many perks but it also has many down falls to it as well. The perks that we enjoy so much from the internet also leaves us open to identity theft and company information theft. This gives Information Technology professionals a lot to think about when they consider Information Technology. One of the biggest threats facing the IT industries today is the end users non-malicious security violations that leave companies vulnerable to attack. In a recent Computer Security Institute survey, 41 percent of the participating U.S organizations reported security incidents. (Guo, 2012 p. 203-236) Also according to the same survey it was found that 14 percent of the respondents stated that nearly all of their company’s loses and or breaches were do to non-malicious and or careless behavior by the end users. (Guo, 2012 p. 203-236) Some of the end users behaviors that help these threats along were the peer-to-peer file-sharing software installed by the end user that might compromise company computers. Some other examples of security being compromised by end users would be people that use sticky notes to write there passwords down and leave them where other people can see them...

Words: 1422 - Pages: 6

Premium Essay

Information Security

...production from the worm outbreak last month, and they directed us to improve the security of our technology. Gladys says you can help me understand what we need to do about it.” “To start with,” Charlie said, “instead of setting up a computer security solution, we need to develop an information security program. We need a thorough review of our policies and practices, and we need to establish an ongoing risk management program. There are some other things that are part of the process as well, but these would be a good start.” “Sounds expensive,” said Fred. Charlie looked at Gladys, then answered, “Well, there will be some extra expenses for specific controls and software tools, and we may have to slow down our product development projects a bit, but the program will be more of a change in our attitude about security than a spending spree. I don’t have accurate estimates yet, but you can be sure we’ll put cost-benefit worksheets in front of you before we spend any money.” Fred thought about this for a few seconds. “OK. What’s our next step?” Gladys answered, “First, we need to initiate a project plan to develop our new information security program. We’ll use our usual systems development and project management approach. There are a few differences, but we can easily adapt our current models. We’ll need to appoint or hire a person to be responsible for information security.” The Need for Security Our bad neighbor makes us early stirrers, Which is both healthful and good husbandry...

Words: 24411 - Pages: 98

Premium Essay

Information Security

...Information security means protecting information and information systems from unauthorized access, use, disclosure, modification or destruction. Since the early days of writing, heads of state and military commanders understood that it was necessary to provide some mechanism to protect the confidentiality of written correspondence and to have some means of detecting tampering. For over twenty years, information security has held confidentiality, integrity and availability as the core principles of information security. Confidentiality is the term used to prevent the disclosure of information to unauthorized individuals or systems. Confidentiality is necessary (but not sufficient) for maintaining the privacy of the people whose personal information a system holds. In information security, integrity means that data cannot be modified without authorization. When Management chooses to mitigate a risk, they will do so by implementing one or more of three different types of controls. Administrative controls form the framework for running the business and managing people. Logical controls (also called technical controls) use software and data to monitor and control access to information and computing systems. Physical controls monitor and control the environment of the work place and computing facilities. Information security uses cryptography to transform usable information into a form that renders it unusable by anyone other than an authorized user; this process is called encryption ...

Words: 4064 - Pages: 17

Premium Essay

Information Security

...The Importance of Information Systems Security Mario M. Brooks Webster University SECR 5080 – Information Systems Security November 17, 2012 Abstract Information System Security is critical to the protection of vital information against unauthorized disclosure for legal and competitive reasons. All critical information must be protected against accidental and deliberate modification. The establishment and maintenance of documents that have been created, sent, and received will be the cornerstone of all financial establishments in modern society. Poor security practices and weak security policies lead to damages to systems. Criminal or civil proceedings can be the result if the perpetuators are caught and if third parties are harmed via those compromised systems. In this paper, Information System will be defined. The paper will also discuss the lapses, vulnerabilities, and the various ways of improving the system. It is very important that the make-up of Information Systems Security and their capabilities are understood. Information Systems can be a combination of information technology and the people that support operations, management, and decision-making. Information Security, is the protection of information and information systems from unauthorized access, disclosure, use, disruption, modification, inspection, recording, or destruction. The terms Information Security, Computer Security, and Information Assurance are frequently used interchangeably...

Words: 1133 - Pages: 5

Premium Essay

Information Security

...Assessment Information Management Dovile Vebraite B00044098 Department of Business School of Business & Humanities Institute of Technology, Blanchardstown Dublin 15. Higher Certificate of Business Information Management 20/08/2014 Contents What is Information Security? ........................................................................ 3 What are the Goals of Information Systems Security? ….……………………………. 4 How big is the Security Problem? ………………………………………………………………. 5 Information Security Threats ……………………………………………………………………… 6 How to Secure the Information Systems? ………………………………………………….. 7 Conclusion …………………………………………………………………………………………………. 8 Bibliography ………………………………………………………………………………………………. 9 What is information security? ‘’Information security, to protect the confidentiality, integrity and availability of information assets, whether in storage, processing or transmission. It is achieved via the application of policy, education, training and awareness, and technology.’’ (Whitman, Mattord, 2011). Information security is the protection of information and information systems from unauthorised access, modification, disruption, destruction, disclosure, or use. In other words it handles the risk management. The definition of information security is based on the concept that if there is a loss of CIA (confidentiality, integrity and availability) of information, then the person or business will suffer harm. What are the goals of information systems...

Words: 1543 - Pages: 7

Premium Essay

Information Security

...Why Information Security is Hard – An Economic Perspective Ross Anderson University of Cambridge Computer Laboratory, JJ Thomson Avenue, Cambridge CB3 0FD, UK Ross.Anderson@cl.cam.ac.uk Abstract According to one common view, information security comes down to technical measures. Given better access control policy models, formal proofs of cryptographic protocols, approved firewalls, better ways of detecting intrusions and malicious code, and better tools for system evaluation and assurance, the problems can be solved. In this note, I put forward a contrary view: information insecurity is at least as much due to perverse incentives. Many of the problems can be explained more clearly and convincingly using the language of microeconomics: network externalities, asymmetric information, moral hazard, adverse selection, liability dumping and the tragedy of the commons. risk of forged signatures from the bank that relies on the signature (and that built the system) to the person alleged to have made the signature. Common Criteria evaluations are not made by the relying party, as Orange Book evaluations were, but by a commercial facility paid by the vendor. In general, where the party who is in a position to protect a system is not the party who would suffer the results of security failure, then problems may be expected. A different kind of incentive failure surfaced in early 2000, with distributed denial of service attacks against a number of high-profile web sites. These exploit a number...

Words: 5786 - Pages: 24

Premium Essay

Information Security

...Human differences Human beings are prone to certain characteristics that tend to affect their relation to information security. Information security refers to the ability of an individual to ensure that information is free from any kind of access by unwarranted individuals. There are several human inadequacies that affect the level of information security. However, this discussion is going to concentrate on three major human characteristics that affect information security. These include: acts of omission, acts of commission and acts of sequence. These three acts are important in to information security because they are not related to distortion of information but they increase the challenges in regard to making information secure. Information security involves the ability of an individual to access certain preserved information with ease. Information security does not involve distortion of information. These reasons make these three acts to be a concern to stakeholders within the information security sector. These three acts have distinct influence on the level of security in regard to information. Parsons et.al (2010) argues that acts of omission involve the inability to execute important activities when dealing with information. There are certain requirements in the field of information that require constant activities. For example, it is recommended that one should change his passwords regularly to reduce cases of illegal access by unwarranted individuals (Parsons et.al...

Words: 974 - Pages: 4

Premium Essay

Information Security

...Attack On Government Computers Computer Security Attack on Government Computers The emergence of computers has augmented information storage in various sectors. Information System (IS) refers to an assembly of computers that aids to collate, stockpile, process, and commune information. The government is one of the principal entities that utilize IS to ensure safety of the country’s information. However, the storage systems normally face attacks by some outer entities. The aim of such hackings ranges from access to confidential information to attacks. Some of the remarkable attackers encompass rival states, revolutionaries, criminals, as well as illegal insiders (Rainer Jr & Cegielski, 2009)The software and information engineers have the required expertise to safeguard the systems thus evading and countering the attacks. The US government has faced myriads of attacks, especially the security information. It is imperative to assert that the notable attacks arise from the terrorists who target the government and other critical points within US. Records show that cyber attacks on federal computer networks increased 40 percent last year, and that figure is likely low as it reflects only the reported attacks. Based on data provided to USA Today by US-CERT, unauthorized access to government computers and installations of hostile programs rose from a combined 3,928 incidents in 2007 to 5,488 in 2008. (Government, 2008) According to Brad Curran, Frost & Sullivan...

Words: 540 - Pages: 3

Premium Essay

Management of Information Security

...Review Questions for Chapter 7 – Security Management Practices Read Chapter 7 in the text, Study the Power Point Presentation and answer these Review Questions 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. What is benchmarking? What is the standard of due care? How does it relate to due diligence? What is a recommended security practice? What is a good source for finding such best practices? What is a gold standard in information security practices? Where can you find published criteria for it? When selecting recommended practices, what criteria should you use? When choosing recommended practices, what limitations should you keep in mind? What is baselining? How does it differ from benchmarking? What are the NIST-recommended documents that support the process of baselining? What is a performance measure in the context of information security management? What types of measures are used for information security management measurement programs? According to Dr. Kovacich, what are the critical questions to be kept in mind when developing a measurements program? What factors are critical to the success of an information security performance program? What is a performance target, and how is it used in establishing a measurement program? Answer: Performance targets are values assigned to specific metrics that indicate acceptable levels of performance. They make it possible to define success in the security program. 14. 15. List and describe the fields found in a properly and fully...

Words: 1387 - Pages: 6

Premium Essay

Information Security Policy

... Information Security Policy Student Name: Brice Washington Axia College IT/244 Intro to IT Security Instructor’s Name: Professor Smith Date: 11/7/2011 Table of Contents 1. Executive Summary 1 2. Introduction 1 3. Disaster Recovery Plan 1 3.1. Key elements of the Disaster Recovery Plan 1 3.2. Disaster Recovery Test Plan 1 4. Physical Security Policy 1 4.1. Security of the facilities 1 4.1.1. Physical entry controls 1 4.1.2. Security offices, rooms and facilities 1 4.1.3. Isolated delivery and loading areas 2 4.2. Security of the information systems 2 4.2.1. Workplace protection 2 4.2.2. Unused ports and cabling 2 4.2.3. Network/server equipment 2 4.2.4. Equipment maintenance 2 4.2.5. Security of laptops/roaming equipment 2 5. Access Control Policy 2 6. Network Security Policy 3 7. References 3 Executive Summary Due in Week Nine: Write 3 to 4 paragraphs giving a bottom-line summary of the specific measureable goals and objectives of the security plan, which can be implemented to define optimal security architecture for the selected business scenario. With advancements in technology there is a need to constantly protect one’s investments and assets. This is true for any aspect of life. Bloom Design is growing and with that growth we must always be sure to stay on top of protecting ourselves with proper security. For Bloom Design...

Words: 4226 - Pages: 17

Premium Essay

Information Security

...Computer Security Anyone would agree that private information needs to remain private. To keep any information secured takes a lot of time and effort. In order to make sure the information will be kept private the information itself has to satisfy certain properties in order to make sure the information is kept secured. “Confidentiality, integrity and availability have been considered the three core principles of information security for more than two decades. They are commonly referred to as the CIA triad” (Cyber Secure Online, 2013). When designing security controls you will definitely be addressing one or more of these core principles. Even though these principles were considered core security professionals realized that the focus cannot solely be on these three principles alone. The CIA triad was expanded by adding an additional four principles that have enhanced and would now have a more sufficient in protecting confidential information. Listed here are the seven principles of the Expanded CIA triad: Confidentiality, Integrity, Availability, Possession, Authenticity, Utility, and Accuracy. As stated above many of the security professionals did not want all concentration to be on the original three, so it made sense to expand. This will ensure that the information that needs to be protected is protected thoroughly. “Each time an information technology team installs a software application or computer server, analyzes an data transport method, creates a database...

Words: 453 - Pages: 2