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WSUS is an intranet application that runs on IIS 6.0 and is administered through a Web-based administration site: http://WSUS_Servername/WSUSAdmin. The WSUS server synchronizes content for subscribed product types and update classifications and allows an administrator to configure approval centrally for each update. Typically, an enterprise configures WSUS to download the actual update installation files as well. Updates can be targeted to specific computers by defining computer groups on the WSUS servers. The membership of those groups can be managed on the server or by using client-side registry entries or Group Policy settings. Automatic Updates, which runs on Windows 2000, Windows XP, and Windows Server 2003, is responsible for downloading and installing updates on the client. Group Policy can be used to configure Automatic Updates to retrieve patches from a WSUS server rather than from the Windows Update servers. GPOs can also drive the download, installation, and restart behavior of the client computers.

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2. List some of the requirements you need to know before you can decide on the remote access design for your company.

Microsoft releases service packs to consolidate critical updates, security rollups, hotfixes, driver updates, and feature enhancements. As suggested at the beginning of this chapter, it is no longer feasible to wait until Service Pack 3 before installing Service Pack 2. You must stay current with service packs to maintain the security and integrity of your enterprise network. WSUS, discussed in the previous lesson, is capable of distributing service packs, but SUS is not. In environments where service packs are not deployed using an update infrastructure, you need to implement the skills covered in this lesson, which will allow you to deploy service packs by means of Group Policy.

Download and extract a service pack Deploy a service pack with Group Policy based software distribution

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3. As a network administrator for a small electronics company, your manager has hired an outside consultant to assist you in developing a remote access strategy. Many of the sales personnel want to be able to access database files from varied locations throughout the United States. The consultant has mentioned that using a tunneling protocol could offer you more security than simply connecting from the Internet. Explain what the term tunneling means. Give two examples of tunnel ing protocols supported by Microsoft Server 2003.

Telnet was once the Internet s primary remote access protocol. It was used for decades on the Internet to connect to servers on local and remote networks. Telnet transmits data in an unencrypted way, which means that Telnet traffic can be monitored. This has led to a decline in its use as a remote access protocol. Because Telnet works in a very basic way, it can still be used to test networking functionality. You can use Telnet to simulate some of the commands used to interact with a mail server. This allows you to verify that SMTP is functioning. The Telnet utility is included with all versions of Windows. Normally, Telnet will connect to TCP port 23, but by specifying an alternate port when opening a connection, it is possible to initiate a network connection to another port. SMTP uses TCP port 25, so to connect to the SMTP service on mail server mail.tailspintoys.internal, you would issue the following command from the command prompt: telnet mail.tailspintoys.internal 25. When the connection is established, you will see a message in the command line identifying the mail server name and the time at which your connection was initiated, similar to the following:

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