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If you do not plan to add Web applications that need to write to the user authentication database, then do not grant all privileges to the Web server user For example, if you simply want to authenticate the user but never update or remove the user via the Web server (that is, using a CGI script or other Web application), then replace all privileges with select This ensures that the Web server user is only allowed to perform select queries on the database, which is equivalent to read-only access
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3 Enter the flush privileges command to instruct the MySQL server to reload the grant table 4 You should now exit MySQL monitor program by entering exit at the mysql> prompt Now log in to MySQL by entering the mysql -u httpd -p command and by supplying the appropriate password (2manysecrets in this case) You should be able to access the database auth by entering use auth; after you are at the mysql> prompt If you cannot access the database, make sure you are on the host that you specified in the grant statement issued earlier
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MySQL database server s favorable status in the open source community has led to the development of an Apache module called mod_auth_mysql This module can be used to interface with a MySQL server for authentication You can download the latest version of this module from wwwmysqlcom/Downloads/Contrib/ Here is how you can compile and install mod_auth_mysql 1 As root extract the mod_auth_mysql source distribution in /usr/local/src directory A new subdirectory called mod_auth_mysql-version Change to this directory and run:
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/configure --with-apache=/usr/local/src/apache_version --with-mysql=/usr
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Make sure you change the /usr/local/src/apache_version with the Apache source distribution path and the /usr with the path where MySQL
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header files are installed If you have installed MySQL using the default configuration, the headers file are installed in /usr/local/mysql and supplying --with-mysql=/usr is the right value for such setup because the mod_auth_mysql script generates /usr/local/mysql by appending /local/mysql to /usr 2 Run make and then change directory to the apache source distribution and run either /configstatus --activate-module=src/modules/ auth_mysql/libauth_mysqla (if you have compiled Apache already) or
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/configure --activate-module=src/modules/auth_mysql/ libauth_mysqla --prefix=/usr/local/apache (if you are compiling
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Apache for the first time) 3 Finally, run make && make install to compile and install Apache with mod_auth_mysql support 4 Now restart the Apache server using the /usr/local/apache/bin/apachectl restart command
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After you have compiled and installed mod_auth_mysql, created the database containing user and group tables, and also created a database-level user for Apache to access these tables, you can configure Apache as follows: 1 In httpdconf add the following lines outside any <VirtualHost> or any other type of containers such as <Directory>, <Location>, and the like
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Auth_MySQL_Info db_hostname db_username db_password Auth_MySQL_General_DB database_name
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The first directive tells Apache which database server to connect to by using which database username and password The database username and password are created in MySQL This username-password pair must not match any interactive user account on your system The second directive states which database to connect to If you use a single database for all your user authentication needs, you can simply set the database name here Doing so will save you from typing in a database name for each authentication configuration segment 2 To require authentication for a subdirectory under document root called protected_dir you can either create a <Directory> or a <Location> container in httpdconf, or you can use a htaccess file (assuming you have AllowOverride AuthConf set in httpdconf to the main server or to an appropriate virtual host) to have the following configuration segment:
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AuthName Members Only AuthType Basic require valid-user Auth_MYSQL on
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7 Authenticating and Authorizing Web Site Visitors
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Auth_MySQL_DB database_name Auth_MySQL_Password_Table password_table_name Auth_MySQL_Username_Field username_field_name Auth_MySQL_Password_Field password_field_name Auth_MySQL_Group_Table group_table_name Auth_MySQL_Group_Field group_field_name Auth_MySQL_Empty_Passwords off Auth_MySQL_Encrypted_Passwords on Auth_MySQL_Encryption_Types Crypt_DES Auth_MySQL_Scrambled_Passwords off Auth_MySQL_Authoritative on Auth_MySQL_Non_Persistent off
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