Protecting sensitive or confidential data is paramount in many businesses. In the event such information is made public, businesses may face legal or financial ramifications. At the very least, they will suffer a loss of customer trust. In most cases, however, they can recover from these financial and other losses with appropriate investment or compensation
Having information of different security levels on the same computer systems poses a real threat. It is not a straight-forward matter to isolate different information security levels, even though different users log in using different accounts, with different permissions and different access controls (Red Hat, Inc. 2006).
Below I have listed the IT infrastructure of Richman Investments along with recommendations in each infrastructure on levels of security that should be implemented for a more secure network.
IT Infrastructure Affected
1. User Domain: The people who access an organization’s information system.
* The first thing that should be implemented is a mandatory Computer Security training session to educate the users on the proper use of work computers.
2. Workstation Domain: Users (most) connecting to the IT infrastructure.
* The workstation domain comes with its own problems such as unauthorized access to the system, the way to fix this problem would be to implement access policies and guidelines.
The Term Paper on Information System Security Principles
... overall information infrastructure. ? Ensure that only trustworthy personnel have physical access to the system. Methods of providing such assurance include appropriate background investigations, security ... perform normal computing functions, restricted users are permitted to run executables that have root or administrator-level access to system resources. This is ...
3. LAN Domain: A collection of computers connected to one another or to a common connection medium.
* Implement second or third level identity check to gain access to sensitive systems, applications, and date. Keep all hardware in a secure location with access only with proper ID.
4. LAN-to-WAN Domain: Link between the Wide Area Network (WAN) and the Internet.
* Conduct post configuration penetration tests of the layered security solution within the LAN-to-WAN Domain. Test inbound and outbound traffic and fix any gaps. Also, apply e-mail server and attachments antivirus and e-mail quarantining for unknown file types. Stop domain-name Web site access based on content-filtering policies.
5. WAN Domain: Wide Area Network (WAN) connects remote locations to the Local Area Network (LAN).
* Encrypt confidential data transmissions through service provider WAN using VPN tunnels.
6. Remote Access Domain: Connects remote users to the organization’s IT infrastructure.
* Remote Access Domain, Being that the users are off site it is hard to say that the users password information has not been compromised. In such cases when abnormalities are spotted or data is accessed without proper authorization, data should be completely encrypted to prevent any sensitive materials from being sold or presented to the open market.
7. System/Application Domain- Holds all the mission-critical systems, applications, and data.
* Develop a business continuity plan for mission-critical applications providing tactical steps for maintaining availability of operations. Perform regular rigorous software and Web-application testing and penetration testing prior to launch.
