$ sudo setsebool httpd_can_network_connect 1 -P
https://stackoverflow.com/questions/27435655/proxy-pass-isnt-working-when-selinux-is-enabled-why
$ sudo setsebool httpd_can_network_connect 1 -P
https://stackoverflow.com/questions/27435655/proxy-pass-isnt-working-when-selinux-is-enabled-why