POS421 Week 5 Individual

Domain Design for Security Worksheet
In the Week 4, a domain model was created for Company Beta. When the domain model was created, it was thought to cover all the security concerns associated with the information contained on the network. Unfortunately, this is not the case. Recently, there has been some compromising activity to allow sensitive information to possibly get into the wrong hands. To help aid in eliminating the possibility of this occurring again, the entire domain model will be re-evaluated. This will provide security enhancements that are not present in the current domain model. In order to re-evaluate the current domain model, there are several aspects that we will have to discuss. These aspects include the type of domain model used for current domain model, the affects subnets may or may not have, how a new domain model can provide better security, how to improve the domain name system, the Internet domain name and its effect on the DNS name-resolution process, and can ISDN be improved. In addition, it will also be noted how domain controllers can be utilized to provide the company with adequate expansion in the future due to user population increase.
Current Domain Model Type
The domain model type currently being utilized by Company Beta is that of a single domain. The overall company is the domain name. The Boston, MA and Toronto, Canada locations are just branches off of the domain root name. This also means that the additional locations, along with their subnets, serviced by the main locations are branches based off of their respective main location.
A single domain is considered one of the easiest domains to implement and one of the cheapest in terms of maintaining. This type of domain has a single domain name. This name then acts as the root to the rest of the forest. With a single domain, any domain controller has the ability to authenticate users within the forest. In addition, directory data also is frequently replicated

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