Resumen de A secure OS-based firewall
System administrators working with limited resources must be resourceful. Sometimes, however, this same limitation can force the system administrator to think thoroughly about the problem at hand in order to utilize the scarce resources effectively. In this article, I present an example of how a limitation in disk space led me to rethink the role of the firewall. I also show how to build a BSD-based firewall that fits on a floppy and runs on a PC without a hard disk. This type of configuration could be, in my opinion, more secure than some commercial products and most OS-based firewalls running on a PC with a hard disk drive.
