[ale] iptables rules

[Christopher Fowler]

I have a machine on the network that I need to protect my bandwidth
from.  This is a windows box and it is clear to me that it can not be
trusted.

My firewall is 192.168.1.254 and I want it to be able to go to port 25
of that machine but not out the public interface.  I also want to block
all outgoing ports other than 80.  

2 Trojans were found on this machine and I think it has become a spam
box.