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26 <title>How-To / Tutorials</title>
30 <title>How-To / Tutorials</title>
33 <dt>Authentication and Authorization</dt>
35 <p>Authentication is any process by which you verify that
36 someone is who they claim they are. Authorization is any
37 process by which someone is allowed to be where they want to
38 go, or to have information that they want to have.</p>
40 <p>See: <a href="auth.html">Authentication, Authorization</a></p>
45 <dt>Access Control</dt>
47 <p>Access control refers to the process of restricting, or
48 granting access to a resource based on arbitrary criteria. There
49 are a variety of different ways that this can be
52 <p>See: <a href="access.html">Access Control</a></p>
57 <dt>Dynamic Content with CGI</dt>
59 <p>The CGI (Common Gateway Interface) defines a way for a web
60 server to interact with external content-generating programs,
61 which are often referred to as CGI programs or CGI scripts. It
62 is the simplest, and most common, way to put dynamic content on
63 your web site. This document will be an introduction to setting
64 up CGI on your Apache web server, and getting started writing
67 <p>See: <a href="cgi.html">CGI: Dynamic Content</a></p>
72 <dt><code>.htaccess</code> files</dt>
74 <p><code>.htaccess</code> files provide a way to make configuration
75 changes on a per-directory basis. A file, containing one or more
76 configuration directives, is placed in a particular document directory,
77 and the directives apply to that directory, and all subdirectories thereof.</p>
79 <p>See: <a href="htaccess.html"><code>.htaccess</code> files</a></p>
84 <dt>Introduction to Server Side Includes</dt>
86 <p>SSI (Server Side Includes) are directives that are placed in
87 HTML pages, and evaluated on the server while the pages are
88 being served. They let you add dynamically generated content to
89 an existing HTML page, without having to serve the entire page
90 via a CGI program, or other dynamic technology.</p>
92 <p>See: <a href="ssi.html">Server Side Includes (SSI)</a></p>
97 <dt>Per-user web directories</dt>
99 <p>On systems with multiple users, each user can be permitted to have a
100 web site in their home directory using the <directive
101 module="mod_userdir">UserDir</directive> directive. Visitors
102 to a URL <code>http://example.com/~username/</code> will get content
103 out of the home directory of the user "<code>username</code>", out of
104 the subdirectory specified by the <directive
105 module="mod_userdir">UserDir</directive> directive.</p>
107 <p>See: <a href="public_html.html"
108 >User web directories (<code>public_html</code>)</a></p>