Peter Allgeyer wrote:

>>At the end I would like to point at FWBuilder.org 
>>    
>>
>Ouch! Are you serious? m0n0wall is much more intuitive.
>  
>
I can't agree more. I've tried fwbuilder, and would rather write the
rules manually.

I ran across something in Ubuntu's apt repository that looks
interesting, though:
http://www.simonzone.com/software/guarddog/

I haven't tried it, but I like the looks of the interface from the
screenshots, at least for novices. I do think, though, that an advanced
interface would also be necessary if we went this route.