Recommended IP Tables firewall script?

[Rasjid Wilcox]

Can anyone recommend an IP Tables based firewall script for a three interface 
system (External, Internal and DMZ)?

I'm (currently) running Gibraltar, and am currently using the scripts from 
http://www.sentry.net/~obsid/IPTables/rc.scripts.dir/current/, but I'm in no 
position to judge how good these scripts are.

I'd just like some suggestions from someone who knows more about firewalls 
that I do - even if it is just a 'they look okay', or 'I use <some other 
script> and I think it is pretty good'.

Thanks,

Rasjid.