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Metropolis College Review Writing Satellite Office Speeds IT Assignment Help

Metropolis College is a smaller-size college that now has three campuses. Its main (and original) campus is in downtown Metropolis, where about 600 students attend. About two years ago, the college established two satellite campuses in two smaller nearby towns – Angel Grove and Springfield – in an effort to better accommodate students living outside of Metropolis. Each satellite campus has one smaller classroom with a video feed to the main campus, and a lab where students can work on
their assignments. Minimal network infrastructure has been setup at the satellite offices. Choosing the right network setup is a challenge for Metropolis College given that its smaller size gives it access to fewer resources. The main campus connects to the Internet with a 10 Gbps fiber link, Angel Grove with a 7 Mbps DSL line, and Springfield with a 25 Mbps cable modem. Each campus has its own direct link to the Internet, and there are no WAN links between campuses. While Internet connectivity works well at the Metropolis campus, there are issues with Internet connectivity on both campuses. In addition, both satellite campuses have been hacked in different ways due to network security issues. Metropolis College has hired you to identify the problems and propose solutions for their network issues.

Issue 1 – Satellite Office Speeds
Both satellite offices have Internet connectivity issues. Instructors at the Angel Grove campus often complain that the video feed to the main campus often stalls to the point that it’s not viable, and they have given up using it. Students using the Angel Grove lab machines complain that the software they use, which relies heavily on Internet communications, is painfully slow, almost to the point of being unusable. While students are not happy with the software performance on the Springfield campus,
they are still able to use it to get their work done. Unfortunately, the video feed for instructors on the Springfield campus has the same issues as the Angel Grove campus. As a whole, people are becoming quite frustrated with these issues, and Metropolis College is worried that they may lose students, and even possibly instructors.

With some research, you discover the following Internet connectivity options exist at the Angel Grove campus.

Metropolis College Review Writing Satellite Office Speeds IT Assignment Help

You discover the following options are available at the Springfield Campus. Note that the phone and cable providers are the same between both towns, but Springfield has a fiber option.

Metropolis College Review Writing Satellite Office Speeds IT Assignment Help

1. The first item the college needs to consider is which underlying technology to use at the satellite offices (DSL, cable modem, or fiber). Compare and contrast each of these three with at least 6 points of comparison, making sure to relate them back to the college’s needs at the satellite office.

2. Which technology and speed would you recommend for Internet connectivity at Angel Grove and Springfield? Explain why you believe this to be the best choice for each campus.

Issue 2 – Metropolis Campus Hacked
A server, which resides on the main campus, and which acts as the repository for student grades, was hacked. The incident actually went undiscovered for about three weeks, when it was discovered by happenstance by an instructor. She noticed the web grading program showing different grades for a couple of prior students than what she had assigned. She alerted the college’s small I.T. department, which used the only evidence they had on the matter – an audit log and a monthly backup file. The
department discovered through the audit log that the attacker illegally gained access and downloaded all grades in the system, and that the attacker had actually carried out the hack at the lab in the Springfield campus! By comparing the backup file with the current data, they also discovered that a few specific student grades had been altered. Thankfully only a few grades were altered, but this raised the question if those few students were involved with the attack. Regardless, the college is scrambling to upgrade security on their network to prevent this and other kind of attacks in the future.

The server room at the Metropolis campus currently has only one network security control, which is a packet filtering firewall that sits between the Internet link and the server room. That firewall is configured to prevent inbound traffic coming in over a few ports, and outbound traffic leaving the campus over a few ports.

3. As one familiar with network security, you recognize it is essential that the campus secure its network perimeter so that only those authorized can gain access. Identify and describe two points of entry onto the main campus’s network that could potentially be used by an intruder to gain access to the network. Make sure to explain to the firm how the intruder could have gained access through each point of entry.

4. Explain the mechanics of how the packet filtering firewall could be used to help secure Metropolis College’s network perimeter, for each of the points of entry described in #3. Would anything need to change with the firewall’s current setup to provide this network security?

5. Identify a second kind of firewall not yet used, explain the mechanics of how it works to protect networks in general, and explain how this firewall could be used to secure the points of entry identified in #3.

6. There are additional ways to secure points of entry other than using firewalls. For each point of entry identified in #3 for the campus’ network, identity and describe a device or method that could be used to secure it other than a firewall.

Issue 3 – Eavesdropping
Several applications used by the college’s lab connect over the public Internet to the main office. You recognize that this has major security implications in that unauthorized people can potentially eavesdrop on the communications.

7. You further recognize that at the very least, directly encrypting the communications between the client and server in the application would protect against this eavesdropping. Explain to the college the purpose of encryption and how it would protect the applications’ communications.

8. Also explain the differences between symmetric and asymmetric encryption, making sure to cover the topics below.
a) the number of keys involved
b) key management and distribution
c) mathematical operations performed on data
d) relative speed

9. Which of these two types of encryption would you recommend for the college’s applications? Tying It Together

10. Taking a step back and looking at Metropolis College’s network as a whole, would establishing private WAN links between the campuses make for a more performant, reliable, and secure network? Explain.

11. What would be the advantages and disadvantages of making the architectural change described in #10?

12. What other changes, administratively or technically, could take place to help secure the college’s network? Identify and describe at least two.

 

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  • Uploaded By : Noah
  • Posted on : October 03rd, 2018
  • Downloads : 109

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