Thomas,
 
I've been using floppyfw for a while and I'm quite happy with its
performance and capabilities. Due to personal requirements, I had to
rewrite de firewall rules to suit my need and I want to share these
rules.
 
You probably receive a ton of this kind of contribution but hopefully
this will still be useful. I'm using the following approach for each
trunk (IPUT, OUTPUT and FORWARD):
 
1st - Exceptions for allowed traffic
2nd - Allowed traffic
3rd - General policy (DROP)
 
All rules are commented, and I also added some configuration to increase
protection (such as blocking source routed packets by default).
 
I use this configuration with an AMD 586, 32 MB RAM, 2 Realtek NICs and,
floppy FW 2.0.6. My connection is by ADSL with PPPoE.
 
Comments are welcome of course.
 
Regards,
 
Omar Herrera