20.3. Booleans

SELinux is based on the least level of access required for a service to run. Services can be run in a variety of ways; therefore, you need to specify how you run your services. Use the following Booleans to set up SELinux:
selinuxuser_mysql_connect_enabled
When enabled, this Boolean allows users to connect to the local MariaDB server.
exim_can_connect_db
When enabled, this Boolean allows the exim mailer to initiate connections to a database server.
ftpd_connect_db
When enabled, this Boolean allows ftp daemons to initiate connections to a database server.
httpd_can_network_connect_db
Enabling this Boolean is required for a web server to communicate with a database server.

Note

Due to the continuous development of the SELinux policy, the list above might not contain all Booleans related to the service at all times. To list them, run the following command:
~]$ getsebool -a | grep service_name
Run the following command to view description of a particular Boolean:
~]$ sepolicy booleans -b boolean_name
Note that the additional policycoreutils-devel package providing the sepolicy utility is required for this command to work.