> echo 1> /proc/sys/net/ipv4/ip_forward > iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE > > You can see I am using an dial up connection to connect to the internet. > > The question is this. Am I leaving a really big security hole by doing > things this way? Or is this good enough for a home user on a dial up > connection.
I would really recommend using a more advanced setup, this one doesn't give you any real protection. The simplest NAT/Firewall system I've found is firehol: http://firehol.sf.net. It is a single bash script, and a really easy config file. You can pretty much just take their example and use it directly for your situation, since it is fairly trivial. Andre
