Linux Router ...

[Keith Morse]

james at jamesmcdonald.id.au wrote:
> For firewalling I use www.fwbuilder.org which has a nice graphical
> interface and version control. You put the firewall script on the box
> somewhere like /etc/firewall/<hostname>.fw and then configure it to be
> triggered by /etc/ppp/ifup.local
>   

I'd like to second this. In my opinion,  fwbuilder is one of the best
software projects available out there.  The interface is second to none,
allows for comments in your rulesets, and makes it easier for auditing
purposes.