Guess that sh1t didn't work huh?
Guess not T_S. My advice go to a puter bookstore and get a book on IP-tables and create what you want linux is a learning enviroment when you start with it its all trial and error but try and stay away from GUI programes. Least if you write your own rules you know whats happening just some advice. Problemchild helped me a lot with IP-tables and linux in general and i learned a lot from it it's an experiance. /* Side note */ try and stay away from X enviroment if you want to learn linux go command line a lot of hassle but what you come out with in the end the results are pleasing I dont use a GUI in any U*nix enviroment simply because its all in the shell. Not unless you want tunez, movies to play on it etc and that will take some tweaking gawd it's been that long since i used Xwindows i forgot what the media players are etc. Some one here could give you an answer though

peace