zebra barcode printer c# Using .htaccess to Control Access to a Directory in Objective-C

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Using .htaccess to Control Access to a Directory
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Password protection is one of the most commonly used features of .htaccess files. It is also a bit more difficult to set up than customized error codes, but it s far more versatile in its ability to control access to directories. First, create a new file called .htpasswd. Create and save this file in the same fashion as the .htaccess file. Include the username and password information in it, in the following format:
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username:password username:password charles:mypassword
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As you can see, the username and a password, separated by a colon, are on individual lines and there should not be any spaces at the end of each line. NOTE: The username fields remain in English, but the password fields should to be encrypted to keep them secure. You can accomplish this with the htpasswd command.
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CHAPTER 14: Web Site Security
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Once the .htpasswd file is created, the file must be uploaded (in ASCII format) and stored above your Web root or public_html folder. You might want to ask your web host exactly what path you should use. Remember that the .htaccess file will affect the current directory, plus any subdirectories contained in it. Be sure you are placing the file in the right folder. Sometimes one directory section needs protection; other times, the whole site needs it. Next, you will need to add coding to the .htaccess file for the directory you want to protect:
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AuthUserFile /home/pathto/.htpasswd AuthType Basic AuthName "My Secret Place" <LIMIT GET POST> require valid-user </LIMIT>
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Let s explore what this code means, starting with the first line: AuthUserFile /home/pathto/.htpasswd allows the browser to find the right path to your .htpasswd file. The rest of the command after AuthUserFile specifies the path leading to the actual file name. AuthType Basic defines the type of encryption to be used. There are multiple methods of encryption, but Basic is the most commonly used. However, it shouldn t be used for any systems that host high-traffic or high-security environments. AuthName "My Secret Place" defines how your protected directory is referred to in the pop-up message box when the visitor hits the protected area. This name is yours to choose. The users see only what is inside the quotes. This last part of the script tells the browser to check credentials that the visitor enters into the box against the information in your .htpasswd file:
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<LIMIT GET POST> require valid-user </LIMIT>
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When visitors try to access a page within a protected directory, they will get a dialog box asking for a username and password. If they enter bad information, they will be directed to an error page. If you would rather password-protect a specific file than a folder, you can use this file name in your .htaccess file, where the AuthUserFile variable defines the specific file or web page for which you want to control access:
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<files "filename.cgi"> AuthUserFile /home/pathto/.htpasswd AuthType Basic AuthName "Secret Place" require valid-user </files>
CHAPTER 14: Web Site Security
Finally, you can and should protect your .htaccess file from being viewed by visitors using this code in the .htaccess file:
<files ".htaccess"> order allow,deny deny from all </files>
NOTE: If you are using Mac OS X Server then see 16 for how to build realms using Server Admin.
Tightening Security with TLS
Transport Layer Security (TLS) began appearing on commerce servers on the Web in the mid-to-late 90s as a means to securely submit confidential financial data over the Web. TLS is based on a protocol called SSL, and is itself often called SSL. This high-level open source security protocol is now an industry standard and is used with various mail protocols, instant messaging protocols, and web sites. TLS is based on RSA Data Security s public-key cryptography algorithms and is denoted by the letter S in the https part of a web site s URL. By default, HTTP over TLS operates over port 443, although this can be customized. OpenSSL is the package that provides the SSL service for Mac OS X and Mac OS X Server. The current version of OpenSSL that is running on a system can be found by using the interactive command-line OpenSSL tool. To do this, use the following command:
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