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You are an independent consultant who specializes in Information Technology security issues. You have been retained by the Designer Distributions Company, a mid-sized and growing consumer goods distribution company, for an assignment to assess the state of their computing environment security situation. The company's newly hired VP of IT is conducting this project because she does not have a security specialist on her staff and has learned that the company does not have a comprehensive security strategy. In fact, she suspects lack of even basic security knowledge in both the IT staff and the user community.

The company has a headquarters office building, which includes the principal data center, and a separate warehouse linked to the office by an private data network. The warehouse has a small computing facility of its own for order shipment data entry and tracking. This computer is linked to the headquarters order entry systems through the network. Additionally, there are Internet-based data links to several key suppliers used to share reorder, production and shipping schedules and status information. When potential new suppliers compete for contracts with Designer Distributions, their proposals are received and negotiated via Email.

You have been interviewing executives and staff at the company and at key suppliers and are beginning to evaluate what you have learned in preparation for preparing your report to the VP of IT.

Details: One of the recommendations you are making to Designer Distributions corporation is to create a full-time position of security administrator. Until now, the job has been done on a part-time basis in the systems administration department, which was a viable approach when the company did not have inter-facility and Internet networking connections. Now you believe that security planning, implementation, and administration tasks required to support the growing network justify a stand-alone position. In support of this recommendation, you are preparing a presentation describing these tasks, their purpose, and their criticality.

Write a 8-10 slide presentation outlining the security concerns and resulting administrative functions required for a network that contains the following elements

Access to business applications such as Designer Distributions' order processing/shipment scheduling system from a remote company location (e.g. the warehouse)
A corporate email system used internally by employees and externally to the Internet for correspondence and supplier bid proposals
A company website on the Internet as well as employee access to the Internet
File transfer capabilities allowing sales staff access to and transmission of data files containing supplier and customer specific information (using remote dial-up phone connections)
A wireless network within the headquarters building that allows employees to move their laptop computers from desks to conference rooms while maintaining connectivity to the computer applications and email system

Your presentation should describe the implementation and ongoing maintenance of security system features that protect these networking elements from the risks that you identify.

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Solution Summary

Security Policies for a company's Networks are outlined.

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Computer network security question discussion.

When you learned about the various technology products needed to secure an Internet perimeter, what differentiates one product from another in the marketplace? Why would a Cisco firewall be better than a SONICWall firewall, or is it? As you think about these questions, what might be some questions you'd ask a security product vendor when selecting firewalls, routers, and IDSs?

2-Please answer this post like discussion if you agree or disagree, and why? Please explain it. This post is the answer from somebody else about question #1.

When choosing firewall for network implementation, many things can differentiate one firewall from another. Firewalls can be different from each other according to what they offer. These are services that most firewalls offer today:
1.0 Full State Awareness, which has access to the "raw message," and can examine data from all packet layers. In addition, FireWall-1 analyzes state information from previous communications and other applications. The Inspection Module examines IP addresses, port numbers, and any other information required in order to determine whether packets comply with the enterprise security policy. It also stores and updates state and context information in dynamic connections tables.
2.0 Securing "Stateless" Protocols allows the firewall to understand the internal structures of the IP protocol family and applications built on top of them. For stateless protocols such as UDP aand RPC, the Inspection Module extracts data from a packet's application content and stores it in the state connections tables, providing context in cases where the application does not provide it. In addition, it can dynamically allow or disallow connections as necessary. These capabilities provide the highest level of security for complex protocols.
3.0 The Inspect language is based on using a checkpoint language for inspection of packets
4.0 Stateful Inspection: Under the hood to the firewall is able to ensure highest level of security, a firewall must be capable of accessing, analyzing and utilizing the following. The following functions are performed by stateful firewall: Communication Information - information from all seven layers in the packet
Communication-derived State - the state derived from previous communications. For example, the outgoing PORT command of an FTP session could be saved so that an incoming FTP data connection can be verified against it.
Application-derived State - the state information derived from other applications. For example, a previously authenticated user would be allowed access through the firewall for authorized services only.
Information Manipulation - the evaluation of flexible expressions based on all the above factors.
Check Point's Stateful Inspection is able to meet all the security requirements defined above.
Personally when designing network for a small or medium company I will choose Sonicwall over Cisco because of easy to configure that its firewalls offer, and the price that is much cheaper than Cisco's. In the opposite if I have to design a network for large company I will choose Cisco firewall because of the complexity of their system design, also because the name of Cisco which will give them more assurance than Sonicwall will do. The best thing to do is also mix both firewalls in the design since their interoperability is guaranteed.

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