Setting up group access in .NET

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Setting up group access
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However, the previous example will let only one user in, paul. In most cases this is not very practical as most sites will need to allow more than one person in. This can be accomplished in two different manners: Instead of the Require user paul directive that allows only the user paul access to the directory, Require valid-user allows anyone in the password file access to the directory after correctly entering their password. Another option is to create a group file that associates a group name with a list of users listed in a file. The format of this file is straightforward and can be accomplished with one s favorite editor:
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GroupName: paul justin roger
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The directory container will need to know where the password file and the group file are located. Because there can be more than one group listed within the group file, which group may gain access will also need to be specified:
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<Directory /srv/www/htdocs/private> AuthType Basic AuthName By Invite Only AuthUserFile /etc/http-passwd AuthGroupFile /etc/http-groups Require group GroupName </Directory>
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Anyone that has been properly authenticated and is listed in the group GroupName will be let in to the By Invite Only realm. An issue with the Basic authentication is that the username and password must be verified every time a request is made for a resource from the server, be it an HTML page, an image, or any other resource from the protected directory. This can slow things down a little in regards to the responsiveness of the web server. In fact, the amount that the web server slows down is proportional to the size of the password file. Remember that the Apache web server has to open up that file and go down the list in order of users until it gets to the user in question, every time a page is loaded. A consequence of this is that there is a practical limit to how many users can be listed in one password file. While the limit will vary depending on the configuration of a particular server, chances are that after a few hundred entries the performance of the web server will suffer and a different authentication method option may be needed. Such a method can be found in the mod_auth_dbm module. The mod_auth_dbm module provides the AuthDBMUserFile directive, which allows files to be used with the dbmmanage program.
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Note Additional information about authentication on your Apache web server is beyond the scope of this book. However, if you are interested in delving deep into the topic of security and Apache, you can check out a book such as Maximum Apache Security (Sams, 2002) for more information.
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The Common Gateway Interface (CGI) defines a way in which a web server can interact with external programs, often referred to as CGI programs or CGI scripts, for generation of dynamic content based on a client request. To configure the Apache web server to interact with a CGI program, the first task to complete is to let the web server know where the CGI programs reside. One method is with the ScriptAlias directive, which tells Apache that a particular directory has been set aside for CGI programs. Apache assumes that every file in a given directory is a CGI program. Thus the web server attempts to execute a program when a client requests a particular resource. The ScriptAlias directive is much like the Alias directive, which defines a URL webspace that is mapped to a particular directory on the filesystem. Consider the following example:
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ScriptAlias /cgi-bin/ /srv/www/cgi-bin/
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For the given example, the directive marks the target directory, /srv/www/cgi-bin, as containing CGI scripts that will be processed by the Apache module mod_cgi s cgi-script
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