standalone firewall

[John W]

 I'd like to open by saying thank you to those who helped me with the CDRW 
issue and say that all is well. Thanks again. I am looking into setting up an 
old box as a firewall for a Linux box and one windows box. I have looked into 
the Linuxrouter project and what I found seems to be rather dated. I have at 
my disposal Linux Mandrake 7.2, RH 6.2&7.0, Debian 2.2 Potato, FreeBSD 4.1 
and Storm Hail release. Would any of these suit my needs or might their be 
something specialized for this purpose. I am a newbie so user friendliness 
would be nice as well. I have no problems RTFM's to achieve what I am after.
All help appreciated!
-- 
John Wheat