Exploring Solution Options in .NET

Creating QR Code in .NET Exploring Solution Options
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How valuable are the target assets that are to be protected Daily cash receipts, potential loss from liability.
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Auditing Is each population s access going to be subject to conforming with externally imposed audit requirements The access of three populations owners, managers, and employees needs to conform. Customers and preferred customers do not actually input any financial information (other than the preferred customers credit cards). Will auditable access logs be required to show every access to financial reports over the last three years Our best practice is to archive the logs with access security applied to them for at least three years.
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The most obvious possible solution is one directory for all populations. Another option is one directory for each of the four processes (purposes): a directory for point of sale, one for financial reports, one for access to bank deposit records, and one for access to preferred customer records. A third option is one directory for each of the four end-user populations. Any one of the approaches could be made to work, so the question is, which one provides the best mix to meet all objectives and offers the potential for tighter security controls within an identified security policy domain Or does some other amalgamation of identity information fit better
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Exploring Solution Options
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Examine all available options before deciding on a solution. Here s a quick analysis of possible solutions for the coffee shop example:
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One master directory One directory dictates only one security policy domain surrounding the directory. This is not optimal because there are different trust levels between the workers and customers. This also amplifies the problem areas in each of the next two alternatives. Four purpose directories One for fast-track-pass preferred-customer ordering, one for point of sale, one for financial reports, and one for banking report access. For the owners to get the access needed, they are entered in all four, managers are entered in three, employees in two because during off hours they want fast-track-pass ordering, and preferred customer are in the fast-track-pass directory. This leads to four policy domains with mixed populations and limits the ability to isolate resources and data flows on the network. It also makes it very difficult to define the policy domains.
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Developing Directory-Based Access Control Strategies
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Four population directories One directory for owners, one for managers, one for employees, and one for preferred customers creates four policy domains all requiring access to all the same resources. This approach breaks down because all data flow across the network to the same network segments and defines any additional; controls such as limiting routing paths or firewall placement and strict firewall rules become limited. Two rationalized population-specific directories The solution driven by security policy domain considerations recognizes that owners, managers, and employees are accessing similar resources. The preferred customers access one device and one application that can place their standard order and bill their debit/credit card for payment. They have no need to directly access the other features of the point-of-sale system or access any of the financial tracking or reporting applications. Their access is based on proximity of their electronic card at the card reader and knowing their credit or debit card PIN. A clear opportunity arises to isolate and control data from and to a single point-of-sale access point: one specific population in which each person has identical needs for access and resources; hence, one directory and one security policy domain for them. Owners, managers, and employees share similar resource needs but are separated by need-to-know on some of those resources. Managers and owners sometimes work the counter, so everyone needs point-of-sale access. The best fit is one population-specific directory for everyone directly involved in the company. Couple that directory with an additional access control authentication requirement for the high levels of trust needed for access to financial reports. Employees authenticate with username and password; managers authenticate with username and password and have to enter a PIN when authenticating to financial reporting applications; and owners authenticate with username and password, with PIN for financial reports, and a two-factor authentication mechanism such as token card with a time-sensitive number string to enter the banking application. The resulting two population-specific directory approaches with two security policy domains would be the best match for the coffee shop.
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