Open up Firewall of Fedora Core 19

Here's the whole write up on FirewallD.
How you would open up http and https, or specific ports for your box:

$ sudo firewall-cmd --permanent --zone=public --add-service=http
$ sudo firewall-cmd --permanent --zone=public --add-service=https

Restart the firewall:

$ sudo systemctl restart firewalld.service

Or on specific ports:

$ sudo firewall-cmd --permanent --zone=public --add-port=9393/tcp

Restart the firewall:

$ sudo systemctl restart firewalld.service