My local network runs behind a firewall. Can I break through the firewall to give the rest of the world access to the Web server?
You can, but if you do this you are opening up a security hole in the firewall. It’s far better to make the server a “sacrificial lamb” as described above. Some firewall architectures, however, don’t give you the option of placing the host outside the firewall. In this case, you have no choice but to open up a hole in the firewall. There are two options: • If you are using a “screened host” type of firewall, you can selectively allow the firewall to pass requests for port 80 that are bound to or returning from the WWW server machine. This has the effect of poking a small hole in the dike through which the rest of the world can send and receive requests to the WWW server machine. • If you are using a “dual homed gateway” type of firewall, you’ll need to install a proxy on the firewall machine. A proxy is a small program that can see both sides of the firewall. Requests for information from the Web server are intercepted by the proxy, forwarded to the server machine, and the response for
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