Set SELinux boolean value. See also:
semanage-boolean,getsebool. More information: https://manned.org/setsebool.
getsebool -a
sudo setsebool {{httpd_can_network_connect}} {{1|true|on|0|false|off}}
sudo setsebool -P {{container_use_devices}} {{1|true|on|0|false|off}}
sudo setsebool -P {{ftpd_use_fusefs=1 mount_anyfile=0 ...}}
semanage-boolean):sudo semanage boolean {{[-m|--modify]}} {{-1|--on|-0|--off}} {{haproxy_connect_any}}