LinuxBSDos shows you how to replace Ufw with Firewalld in Linux Mint 15
Firewalld and Ufw, the Uncomplicated FireWall, are two firewall management applications installed in some of the most popular Linux distributions. Ufw is the default firewall application installed in distributions based on Debian and Ubuntu, while Firewalld is the default in Fedora, where it replaced the old firewall application when Fedora 18 was released. It is a project of the Fedora development team.How to replace Ufw with Firewalld in Linux Mint 15
Though Ufw has a command-line client that is easier to use, Firewalld brings a lot more features to the table. For example, Firewalld introduces the concept of network zones, which define trust levels for network connections or interfaces. All you need to know about Firewalld is available here.
