On 23 February 2016 at 14:06, fedora <fedora@ayni.com> wrote:

try to use the public zone, which is the zone normally activ...

Not on Fedora which uses FedoraWorkstation as the default zone.

OP you may want to include in your response for troubleshooting the output of firewall-cmd --list-all-zones

Nothing is actually forbidden against localhost so if it is a connection on localhost it should work ...