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Lesson 1: Understanding Network Infrastructure Security This lesson is an introduction to common network infrastructure security concerns. Just as the human skeletal system is the framework of your body, the network infrastructure is the framework of your network. One successful attack on your network infrastructure can cripple your network or even open it to different types of attacks. To properly defend your network infrastructure, you must understand the common security concerns that apply to the network infrastructure. After this lesson you will be able to Discuss general security concerns for your network infrastructure

Do you know what these key terms mean You can check your answers by looking up the terms in the glossary at the end of the book.

Click Start and then click Computer . Right-click the drive and then click Properties . Click the Tools tab and then click Defragment Now . The Disk Defragmenter appears, as shown in Figure 16-1 .

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Only IPs in the text record can legitimately send mail on behalf of the domain otherwise the e-mail is a forgery. For example, v=spf1 mx all means only IPs of MX records can legitimately send on behalf of the domain; all others are forgeries. You should always consider this SPF record as the default. However, v=spf1 all means no IPs are associated with sending domain and as such this domain is not involved in sending mail at all, so all mail claimed to be from the domain is a forgery. This option maps to hardfail status in Sender ID filter and the message will be deleted.

select another property and condition, type a value, and then click And or Or. If you click And, each search result document must match both search parameters before it can be included in your search results. If you click Or, any document containing either search parameter is included in your search result.

Systems administrators use the Windows event log to monitor and troubleshoot the operating system. By adding events to the event log, you can provide systems administrators with useful details about the inner workings of your application without directly displaying the information to the user. Because many IT departments have an event management infrastructure that aggregates events, the simple act of adding events to the event log can allow your application to be monitored in enterprise environments.

create one as described in the section Creating Data Sources and Data Views, earlier in this chapter.

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Use device-specific rendering to display controls on a variety of devices. Use adaptive rendering to modify the appearance of Web server controls. Use the mobile Web controls to display content on a device.

IPSec SAs to be established, preshared keys do not provide the same level of authentication that certificates and Kerberos do. In addition, preshared keys for IPSec are stored in plaintext on each computer or in Active Directory, which reduces the security of this solution. For these reasons, it is recommended that you use preshared keys only in nonproduction environments such as test networks. Exam Tip

As even a brief reading of this book reveals, an administrator has the ability to change many settings or create many new objects that influence the way Exchange operates. Up to Exchange 2010, there was no facility available to be able to track who did what and when at an administrative level. The addition of Windows PowerShell and its ability to affect

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The task pane introduced in Office XP continues to play a major role in Office 2003. Among the task pane s many features, you ll find a number of Web and network related options that enable you to use the task pane to integrate online capabilities as you work. In particular, you can open the task pane by choosing View, Task Pane (or pressing Ctrl+F1) and then use the Getting Started task pane along with other task pane views (accessible by clicking the task pane title bar) to perform the following Internet-related tasks:

The following example sets the chart as an embedded object in Sheet1 :

_____________________________________________________________________________ \\127.0.0.1 Windows 2002 2600 1 01:20:24 \\GLACIER CARL Windows NT 1381 0 00:00:07 The command completed successfully.

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