![]() » Intel Celeron D - Found in Socket 478 and T. » Intel Pentium III - Found in Slot 1 and Socket 370 varieties. » Intel Celeron 500A to 2.8GHz Northwood - Found in Slot 1, Socket 370, 423, and 478 varieties. Though geared towards server environments, this processor is about as much overkill as you can find (expensive too). Although, I'd be happy to take an Athlon 64 FX-60 off of someone's hands :P » AMD Opteron - Socket 940. I'm running an AthSan Diego in my gaming rig, so you can see how these are MAJOR overkill. » AMD Sempron - Found in Socket A and 754. » AMD Athlon K7/K75/Thunderbird - Found in Slot A and Socket A. For our system, the speed of all of these is a minor concern, as we are more concerned with the cost-effectiveness. ![]() RAM is the other vital component in a fast system. A motherboard with a fast chipset and high front-side bus (FSB) is just as important as a fast processor. A fast system relies equally on the speed of all the devices. People are ingrained with the impression that a fast processor makes for a fast computer. » Case (although it's fun to leave this part out and mount the mobo on your wall) » Cooling unit - Heatsink and/or fan (aka HSF), watercooling/phase-change cooling (not practical here, but fun regardless) Processor Often times, when building a computer, people put most of their money here. Every computer must have the following parts: » Processor (obviously) » Motherboard » RAM » Physical drives - optical and/or hard) » Input/output devices - NICs, keyboards, mice, monitors, etc. My suggestion would be to find a compatible motherboard and processor, then find the rest of your parts based on the capabilities of your motherboard. The hardest part about building a computer from scratch is finding the right parts. It costs them more to keep it in inventory than they can make selling it. People just don't sell the old stuff anymore. Please realize though, I HAD to choose hardware that is considered overkill. I have quickly built a shopping cart on to give you an estimate of what it would cost to build this project with completely new parts. Be sure to ask the owners if you can help them dispose of their trash before you go digging around though. Though outdated, these would be ideal for our purpose. Large businesses and educational facilities often throw outdated computers away in large quantities. Believe it or not, dumpster-diving (eeek!) can turn up a whole slew of useful hardware. The USMC actually donated the case, motherboard, and processor to me when they cleaned out an old computer warehouse. Most of this stuff can be found at computer scrapyards for between cheap and free. Hardware The hardware used for my gateway firewall consists of the following: Apple apparently liked it so much, that they combined FreeBSD with the Mach 3 microkernel and a fancy desktop environment known as Aqua to create OS X. Combined with it's zero-dollar pricetag, FreeBSD provides the average user with a culmination of the most modern features, powerful network services, and intuitive setup processes. Software FreeBSD has its roots in the server environment, and continues to impress me with its performance, ease of use, and security. Through the use of open-source software (OSS), outdated PC hardware, and a little know-how, you can build a cheap and highly effective gateway firewall to protect your SOHO LAN. The mark FreeBSD is a registered trademark of The FreeBSD Foundation and is used by John Syrinek with the permission of The FreeBSD Foundation. The FreeBSD Logo is a trademark of The FreeBSD Foundation and is used by John Syrinek with the permission of The FreeBSD Foundation. If you're interested contact me at j0hn7r0n at gmail dot com or catch me online at j0hn7r0n (AIM) or iiwishihadaname (Yahoo). I'd love to collaborate with others to cover what we can. NOTE: This is a work in progress, and unfortunately, due to college and work, I don't have the time right now to cover every detail of this project. I built mine for free using spare parts that were stockpiled in personal storage and parts that the USMC was throwing away, but you can build one from used and/or new parts for dirt cheap. The cost of this project should be between free and $200 depending on your resourcefulness. The firewall will consist of the PF firewall, Snort IDS, various IPS applications, Squid proxy, and some intuitive web interfaces for auditing. Learn how to build your own gateway firewall using FreeBSD® and old PC parts.
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