[H-GEN] Help with Masquerading, linux dialup to the net, then windows boxs hanging off the linux box

[t]

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Hi

I have a dial up connection and want to use linux to connect to the net,
then have windows
boxs hanging off it.  I just looked at the
"Masquerading Made Simple HOWTO"

and it says to do the following

modprobe ipt_MASQUERADE # If this fails, try continuing anyway
iptables -F; iptables -t nat -F; iptables -t mangle -F
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
echo 1 > /proc/sys/net/ipv4/ip_forward

 iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -m state --state NEW -i ! ppp0 -j ACCEPT
 iptables -P INPUT DROP   #only if the first two are succesful
 iptables -A FORWARD -i ppp0 -o ppp0 -j REJECT

Before I do it, do you think it is very secure? All I want to be able to do
through the
linux box from the windows machines at the moment is to surf the net,
collect/send mail
and ssh out(I dont want to be able to ssh to this box from the net).  What
do I need to
add to allow only the services to/from the net.

Thanks for your help

Tony




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