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  • See attached network diagram (Note: this may be out of date but is the most current we can find)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

Data classification and management, Data Classification and Management C...

Data Classification and Management Corporate and military organizations use a several of classification schemes. Information owners are responsible for classifying information a

Important network security services, Question: (a) Consider that you en...

Question: (a) Consider that you enter the given URL in the address bar of a popular web client and that both the client and server accepts HTTP version 1.1. i. What can be t

Network security in an organisation, Network security is an issue for compa...

Network security is an issue for companies regardless of whether they participate in electronic commerce; however, since most organizations have a Web site that allows some interac

Access control matrix, You are provided with 3000 sample keystrokes for 5 u...

You are provided with 3000 sample keystrokes for 5 users mentioned above. You can find this data using the ‘Lab 2 User Data' link in the ‘Lab 2' folder on Blackboard. Please note t

Location to e-mail messages are saved, In the e-mail system, where the e-ma...

In the e-mail system, where the e-mail messages are saved and why? E-mail messages are saved in user’s private electronic mailbox. A mailbox refers to a local/domestic hard drive c

Deploying host-based idss, Deploying Host-Based IDSs -Proper implementat...

Deploying Host-Based IDSs -Proper implementation of HIDSs can be painstaking and time-consuming task .The process of deployment begins with implementing most critical systems fi

Innovative nature of triple key management, Innovative nature of triple key...

Innovative nature of triple key management The triple key management scheme provides secure services by combining different techniques whic contribute to the security and priv

Compare and contrast the trust models-pgp, a. PKI and PGP are two methods f...

a. PKI and PGP are two methods for generating and managing public keys for use in protocols such as secure email. Compare and contrast the trust models for public keys used in PKI

Packet filtering firewall-dynamic packet filtering, Dynamic Packet Filterin...

Dynamic Packet Filtering Dynamic Packet Filtering is also referred to as stateful firewalling. Here the firewall maintains the status of connections as well. When a connection

Draw the full network diagram, Problem (a) Below is a capture of an E...

Problem (a) Below is a capture of an Ethernet II frame which contains an IPv4 packet and a TCP segment. The second screen capture is from the data portion of the frame.

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