"Here's how I turned an unused PC into a packet-filtering firewall using a package called floppyfw. The firewall boots off a single floppy, runs completely in RAM, and uses ipchains for the filter rules. It also does IP masquerading, port forwarding, and can log to a remote host using syslog. All this in a machine with as little as 8 MB of RAM and no hard drive!"
pdowner asks: "I've just finished and handed in my latest Operating Systems Inmternals assignment for my degree in Computer Studies. It
involved writing/modifying a timer module for a Microkernel implemented in modula 2, which is written by one of my lectures and is
available from here. I am interested in finding out what microkernels other universities use to teach their students the insides of Operating
Kerneltrap (http://www.kerneltrap.com/) is a news and discussion
portal devoted to low-level systems programming, embedded
systems, and OS kernel hacking. Whether you are a professionally
trained software engineer, a kernel hacking guru, or a weekend
hobbiest with a knack for device drivers, this site should be of
interest to you.
RAID, short for Redundant Array of Inexpensive Disks, is a method whereby information is spread
across several disks, using techniques such as disk striping (RAID Level 0) and disk mirroring (RAID
level 1) to achieve redundancy, lower latency and/or higher bandwidth for reading and/or writing, and
recoverability from hard-disk crashes.