Substantiating Standards in Visual Studio .NET

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Substantiating Standards
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Each information technology policy provides the basis for the more in-depth and detailed technology standards. The standards help to define the restrictions or limits and refine the usefulness of the applications and systems. Standards differ from policies in that they outline the details of the technologies used and describe the specific use of identified technologies, developmental models, deployment techniques, methods, and rules. For example, a standard would define how end users on the Internet can access company resources using VPN (virtual private network) technology. Standards are used to define operating system configurations, application development models for applying security controls, how applications will interface with stored data, and what encryption or hash will be used for IP (Internet Protocol) transmission of protected data. Many organizations cut short the work associated with developing standards by only going as far as
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Defining and Enforcing Architecture
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defining what software is permitted for use. Needless to say, that does not go nearly far enough to assist in the required level of detail needed. Setting standards is hard work and requires involvement by persons knowledgeable in the various technical areas for which the standards are intended. Their comprehension of the technology must be deep enough for them to know, appreciate, and be able to articulate the consequences of choosing one alternative over others as choices for standardization are made. Because they are more detailed and closer to the products in use, standards call for more frequent reviews than policies do. Certainly if one software product is replaced by another, the standard that led to the original product choice needs to be reviewed.
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Substantiating Procedures
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Procedures flow from policy and standards. In this context, a procedure is a way to accomplish some task, often presented as an order of steps that need to be taken. Procedures start to characterize what or who does something and when the specific courses of action are taken. If it were necessary to shut down an entire computer server room with multiple pieces and types of equipment, a procedure would cover which pieces of equipment should be turned off first as well as the correct order for powering them back up again. For example it may be necessary to power up DNS and DHCP (Dynamic Host Configuration Protocol) hosts before turning on Web servers. There are those who like the idea of combining standards and procedures, but I suggest keeping them separate if for no other reason than procedures may need to change much more frequently than standards typically do. Also, procedures are often done by work area or roles within an organization and may need to be adjusted as staffing levels change or with reorganizations of operating sections or divisions.
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Substantiating Best Practices
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Procedures may or may not spell out instructions for following best practices. Whenever best practices can be foreseen, however, they become a part of the architecture by design. When they are developed later in the systems or application life cycle, they still need to be recognized and documented as a part of the system design or operational plan. When system architectural changes are proposed, best practices being used have to be considered. How will the changes impact the best practices Will they also need to be modified Best practices that are brought in from an external source require adaptation to the context in which they ll be used in your organization. If, for example, a
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best practice is to always use the operating system vendor s minimum security recommendations for configuration, then the adapted best practice must include your configuration elements that need tighter security over the minimum recommended. The National Security Agency publishes some unclassified security bestpractice documents at www.nsa.gov/snac. (The one covering configuration of Solaris 9 is 107 pages.) When using documents like this from outside sources, it s critical to chronicle the recommendations from the full document you are using as well as those that, for operational reasons, are not being followed. Further, recording exactly what the final configurations right down to the final syntax look like for your servers is a critically necessary step in incorporating the best practices adapted for your unique systems. Best practices whether from external sources or internal development are good only for a finite amount of time. External standards bodies and organizations that publish best practices are expected to be on top of the need for changes. Always ensure that you are using the most up-to-date best practices.
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