> > I assume I am using NAT, > since I have a number of other computers (Linux and Windows) > attached to the above machine, > and they access the outside world through email and the web. > Hi Tim, To see if you have NAT, look at your ip address "ifconfig -a" on linux and "ipconfig" on windows. If you are using nat, you will probably see an ip address in starting with 10.something or 192.168.something. If your IP address is something else, there is a good chance NAT is not in effect. You can double check by looking at: http://www.swlink.net/~styma/REMOTE_ADDR.shtml If is a short shtml page which displays the IP address you appear to be as viewed from the outside. If this address matches the address viewed on your linux box, then your box is directly exposed to the Internet and the discussions on IP tables, selinux, and other protective measures apply directly to you. If you would like a simple way out, you can consider getting an inexpensive DSL/Cable router. On ebay you can pick one up for under $30 with shipping. I happen to like the Linksys one, but the Netgear and SMC work too. It sits between your Linux box and the adsl modem. By default it will not let anything in. It will also assign you an IP address in the 192.168.1 range. Or you can just hardcode an address for your Linux box in this range. You then tell it via a web interface to forward port 80 to your Linux box running apache. There are other ways of accomplishing what you want, but I consider this one to be simple and effective. Bob Styma
