Gtk-IPTables is C-based software that utilizes a GTK interface as a frontend for iptables.
To get started with the program, check out the INSTALL file for installation instructions. Once it's installed, just type "gtkiptables" to run it. Keep in mind that compiling the program requires Gtk-dev, which contains the headers files and static libraries. You'll also need the Gtk set of widgets, which comes pre-installed with most linux distributions. Both should be version 1.2.10.
Overall, Gtk-IPTables is a useful tool for users who prefer a graphical interface for managing their firewall rules. Just make sure you have the necessary packages installed before attempting to compile or run the program.
Version 0.5.0: N/A