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Packet filters are rules defined for a particular interface that allow or restrict traffic by source or destination address, direction, or protocol type. Without packet fil ters, a firewall would simply block all requests originating from the external network. To allow external users to connect to a server or service hosted on your internal network, you can create packet filters on a firewall that blocks all requests origi nating from the external network except those requests for the internal service you specify. In Windows Server 2003, each packet filter restricts traffic in only one direction. To allow external access to an internal service, you can configure one input filter and one output filter on the external interface of your firewall. For each filter, specify the service protocol and the address at which the service is hosted. To heighten security, you can configure an additional, similar set of filters on the internal interface of the firewall.

Consider another example: MSF for Capability Maturity Model Integration (CMMI) defines a work item it calls, simply, requirement This requirement work item, however, has a number of subtypes These subtypes include: scenario, quality of service, safety, security, functional, operational, and interface This methodology groups all requirements together but then allows them to be subgrouped by a category These subgroups are pretty granular However, they can be reclassified based on some standard requirement groups such as: user requirements (scenario), nonfunctional requirements (QOS, safety, security), and functional requirements (functional, operational, and interface) These two examples are simply the beginning The definition of software requirements have been discussed, debated, and written about for many years There are many good books out there dedicated solely to the subject of requirements There are also many standards and methods that all take a slightly different perspective on software requirements.

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Our intent is not to change the way you write requirements Enough is common among these methods to make them all viable Rather, we will establish a simple baseline for talking about requirements We will then discuss how you evaluate requirements and recommend solutions based on those requirements..

B. Incorrect: Group policies cannot be applied to groups, only to sites, domains, and OUs. C. Incorrect: Group policies cannot be applied to groups, only to sites, domains, and OUs. D. Correct: The Group Policy will apply only to those Windows XP Professional workstations that are in the Xpwkstn OU. Because all relevant Windows XP Professional workstations have been added to this OU, however, the service pack will be deployed the next time the computers restart.

4. Run the assembly, and verify that it works correctly. 5. Modify the CAS declarations to refuse permissions other than those required so that the assembly cannot be abused by an attacker and made to do something other than it was intended to do. The following code would work:

"VB Dim intUserID As Integer "Set the Session variable with the value for UserID If Session("UserID") = Nothing Then

You work for a small Internet start-up company. As one of their programmers, you created a simple application that reads data from a database once a week and sends out e-mails to registered users of the main Web site. The company has been doing well and has a large database of users (more than 100,000). Now that the number of registered users has increased dramatically, your tool is taking far too long to send out the e-mails. Your manager needs you to make it much faster.

Goal Monitor general database activity Event Category/Event Class Security Audit/Audit Login Security Audit/Audit Logout Sessions/Existing Connection Stored Procedures/RPC:Completed TSQL/SQL:BatchStarting TSQL/SQL:BatchCompleted

If I were a user of Windows 1.0 who saw the Windows Vista desktop for the first time and was asked how to open Outlook, I would be confused I see multiple Outlook icons! Apparently, as indicated by telemetry information collected at Microsoft over several years and by usability studies conducted with thousands of users, quantity does not always translate to quality. When user interface design is concerned, it s often advisable to have only one way of accomplishing a given task. Again, a multitude of ways to do something can be more confusing than liberating. When most users work with fewer than 10 open windows during their session and most advanced features offered by the existing taskbar are not used, there is no choice but to radically redesign the state of affairs. This redesign gives us the new Windows 7 taskbar. It is a revolution in the design of launch surfaces.

www.microsoft.com/learning/booksurvey/

simple volume The equivalent to a basic disk partition is a dynamic disk simple volume. Because simple volumes exist on only one physical disk, they are not fault tolerant.