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Files and Folders
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directory security permissions configured for a site or virtual directory apply to all users and groups.
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Exam Tip
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If IIS permissions and NTFS permissions are both in place, the effective permissions will be the more restrictive.
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Table 6-2 details Web permission levels. You can set these permissions in the Virtual Directory or Home Directory tabs of the properties dialog box for a virtual directory or a Web site.
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Table 6-2
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IIS Directory Permissions
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Explanation Users can view file content and properties. Users can change file content and properties. Users can access the source code for files, such as the scripts in an Active Server Pages (ASP) application. This option is available only if either Read or Write permissions are assigned. If Read permission is assigned, source code can be read. If Write permission is assigned, source code can be written to as well. Be aware that allowing users to have read and write access to source code can compromise the security of your server. Users can view file lists and collections.
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Permission Read (default) Write Script Source Access
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Directory Browsing
The Execute permissions control the security level of script execution and are as described in Table 6-3. You can set these permissions in the Virtual Directory or Home Directory tabs of the properties dialog box for a virtual directory or a Web site.
Table 6-3
Application Execute Permissions
Explanation Set permissions for an application to None to prevent any programs or scripts from running. Set permissions for an application to Scripts Only to enable applications mapped to a script engine to run in this directory without having permissions set for executables. Setting permissions to Scripts only is more secure than setting them to Scripts and Executables because you can limit the applications that can be run in the directory. Set permissions for an application to Scripts and Executables to allow any application to run in this directory, including applications mapped to script engines and Windows binaries (.dll and .exe files).
Permission None Scripts Only
Scripts and Executables
Lesson 4
Administering Internet Information Services
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New in SP1!
Windows Firewall, introduced by SP1 and disabled by default following PostSetup Security Updates, will prevent inbound connections to services on an IIS server. Be certain to understand the exceptions you must configure for ports and applications. Among the most common exceptions are:
Web sites: Browsers using HTTP typically connect to port 80. Port 80 must be open to TCP connections for basic Web services to function. Web-based services: Many native Web-based services require authentication and encryption using HTTPS, which uses port 443 for TCP traffic. These services include Internet printing (IPP), discussed in 8, WebDAV, BITS, FrontPage 2002 Server Extensions, and the IIS Remote Administration tools. Remote Desktop Web Connection: Ports 80, 443, and 3389 must be open for TCP for clients to successfully connect to a Windows server running terminal services. Ports 80 and 443 support the Web site itself, and port 3389 enables Remote Desktop traffic. In addition, port 135 must be open for TCP if Terminal Services Licensing is required. See 2 for more information about Terminal Services. FTP traffic requires port 21 for TCP connections.
Finally, it is common to create an exception for Remote Administration (ports 135 and 445) and to allow incoming ping requests, an ICMP exception.
Practice: Administering IIS
In this practice, you will install IIS and configure a new Web site and virtual directory.
Exercise 1: Install IIS
1. Open Add Or Remove Programs from Control Panel and click Add/Remove Windows Components. 2. Select Application Server and click Details. 3. Select Internet Information Services (IIS) and click Details. 4. Ensure that, at a minimum, Common Files, File Transfer Protocol (FTP) Service, World Wide Web Service, and Internet Information Services Manager are selected. 5. Complete the installation.
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Files and Folders
Exercise 2: Prepare Simulated Web Content
1. Create a folder on the C drive called ContosoCorp. 2. Open Notepad and create a file with the text Welcome to Contoso. Save the file as C:\ContosoCorp\Default.htm being certain to surround the name with quotation marks. 3. Create a second file with the text This is the site for Project 101. Save the file as C:\Docs\Project 101\Default.htm being certain to surround the name with quotation marks.
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