Identified issues in networks, Computer Network Security

Assignment Help:

The "Big Red Rocks" (BRR) mining company is based and operates in Western Australia. They are primarily an iron ore miner, but they also produce electricity through tidal power to support their crushing operations, with any excess power sold back to the power grid through the electricity market. BRR maintains a head office in Perth, and a site office in Port Hedland. There is also a control system network operated at their crushing plant outside of Port Hedland. There is a requirement for database information from the crusher site to be sent to Perth for accounting and other purposes. BRR has been informed by CERT Australia that some of their internal documents have been found on external third party websites, and that they have significant security issues which need to be rectified. You are a network security consultant who has been hired to advise on the issues present in the current architecture and associated network security issues.

The following hardware and software is in operation at each site:

Perth Head Office

  • 200 client desktop PCs running Windows Vista
  • Web server (external) running Apache on Redhat Linux
  • MS Exchange Server on Windows Server 2008
  • 802.11 wireless using WPA TKIP
  • Executives have iPads to access the internal network
  • Connection between Head Office and PH Site over Telco private WAN
  • External Access is via VPN (PPTP) user name and password
  • There is an AV server
  • Port Hedland Office
  • Runs 20 PCs with Windows Vista
  • Authentication to ADS over the WAN link to Perth
  • Connected to mine site via 802.11 wireless (WPA TKIP)

Mining Site

  • No ADS - all PCs belong to a workgroup
  • Connection to PH Site Office via 802.11g point to point link (WPA TKIP)
  • 10 PCs running Windows Vista in the office
  • 5 PCs running Windows NT in the control room (NOTE: This cannot be changed as the SCADA software will not run on a newer OS)
  • There are no individual logons or passwords on the control room PCs (Usernames and passwords cannot be implemented as this is an operational issue)
  • SCADA engineers remotely connect to the mine site through a VPN Server PPTP

 

Other information:

  • The network security policy has not been updated since 2005
  • There is no patching regime
  • See attached network diagram (Note: this may be out of date but is the most current we can find)
  • The VPN at the Head Office and the VPN at the mine site are not connected

 

Tasks:

You are required to produce the following deliverables as part of your contract:

1. A list of the issues with BRRs network as it currently stands. The list will explain the vulnerabilities associated with each issue

2. Treatment recommendations to address the identified issues in BRRs networks

3. A detailed network diagram which creates a more secure network for BRRs operations

4. Updated network security policies which take into consideration current issues and hardware


Related Discussions:- Identified issues in networks

Asymmetric encryption-cryptography, Asymmetric Encryption Asymmetric encr...

Asymmetric Encryption Asymmetric encryption method makes use of two different but related keys and either key can be used to encrypt or decrypt the message. This method is freque

Evaluations, Evaluations, Assessment, and Maintenance of Risk Controls W...

Evaluations, Assessment, and Maintenance of Risk Controls When the control strategy has been implemented, it should be monitored and measured on an ongoing basis to determine ef

Social studies, how would land elevation have canged if coronado had travel...

how would land elevation have canged if coronado had traveled 150 miles due west from what is today arizona instead of west toward new mexico

Nstissc security model, NSTISSC SECURITY MODEL The NSTISSC Security Model ...

NSTISSC SECURITY MODEL The NSTISSC Security Model provides a detailed perspective on security. While the NSTISSC model covers the 3 dimensions of information security, it removes

Estimate the average throughput, Question (a) Estimate the average thr...

Question (a) Estimate the average throughput between two hosts given that the RTT for a 100 bytes ICMP request-reply is 1 millisecond and that for a 1500 bytes is 2 millisecon

Factors of informtion security, Confidentiality Confidentiality of inform...

Confidentiality Confidentiality of information ensures that only those with sufficient privileges may access specific information. When unauthorized individuals can access inform

routing information exchange and bellman-ford algorithm, You are free to d...

You are free to design the format and structure of the routing table kept locally by each node and exchanged among neighboring nodes. 1. Upon the activation of the program, each

Virtual terminal protocol vtp, Write down the short notes on VTR.  Communic...

Write down the short notes on VTR.  Communication between different types of the equipment and software is made possible by making use of the networks. Full-screen text editor is s

Introduction to physical security, INTRODUCTION TO PHYSICAL SECURITY The...

INTRODUCTION TO PHYSICAL SECURITY The Physical security addresses design, execution, and maintenance of countermeasures which protect physical resources of an organization. The

Example of a public key algorithm, Question : (a) There are two approa...

Question : (a) There are two approaches for providing confidentiality for packets in a network using symmetric encryption: End-to-End Encryption and Link Encryption. State wh

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd