Slashdot Mirror

iptraf does this pretty well. You can have a look at screenshots of it in action here.

The Dreamcast DID have a proprietary format. It was called the GD-Rom.

The following explanation is courtesy of SkunkWorks

The Sega Dreamcast GD-ROM system utilizes Oak Technology's OTI-9220 CD-ROM controller which is a single chip integration of Sony's "CXD-3005R" DSP/Servo control and Oak Technology's "OTI-912" CD-ROM decoder.

So what does this mean? Sega had their "proprietary" GD-ROM system designed to use media with 2 times the capacity of CD-ROM discs, but with off-the-shelf CD-ROM components, and may have used a technique of running the spindle motor at half the speed required for CD-ROM's in reading 2x density GD-ROM discs-- tricking the pickup into believing it's reading off data from a CD-ROM disc at "x" (CAV) spindle rpm when it is actually reading a GD-ROM disc at "y" spindle rpm (x divided by 2=y). With same data read rates as with a CD-ROM disc running at twice it's rpm, the optical head, focus servo controls, signal processors, etc etc. aren't aware it's actually reading data off from a larger capacity medium. In other words, the GD-ROM disc is nothing more than a "passively accelerated" (tightly packed) CD-ROM disc, "decelerated" to emulate a CD-ROM by running the spindle motor at half the rpm!

It has compiled on every system I've wanted to use it on, and is a quick way to get a good look at who's connected and what they're up to.

Check it out here.

Given that you're posting around here, I'm guessing you have a Linux box handy. Here are some of my favorite sysadmin tools:

• dig - This is a more advanced tool for seeing what's going on with DNS.
• nmap - A great tool for probing your server to make sure you haven't left anything open.
• Apache Bench (ab) - This simple but effective benchmarking tool comes with the Apache server. It's great to see how your site will perform under load.
• wget - a tool for remotely getting web pages; it's very versatile -- you can even use to save a copy of your whole site, just in case.
• Ethereal - Having trouble figuring out what's going on between the browser and your server? This will capture all the packets and decode them into a nice conversation for you.
• vmstat - want to know why your server is slow? Get used to watching the vmstat numbers while it's fast, so you can see what's different when it's slow. It's raw numbers that are hard to interpret, but it's worth getting to know. Maybe this should be another Ask Slashdot question?
• Netsaint - this is my favorite automatic monitoring package. Once your site is in production, you can set this up to patrol things and make sure everything is working. That lets you get on with other stuff, knowing you'll hear about trouble pronto.
• MRTG - A tool that makes excellent long-term graphs of bandwidth use.
• IPtraf - Where MRTG gives you the broad overview, this gives you the second-by-second nitty gritty.
• perl - Last but most is Perl, a Swiss Army chainsaw of languages. If you'll be doing any web stuff, pick up a copy of Learning Perl and spend a little time with it. Once you learn the magic of regular expressions, you will never again say "that's impossible!" to a problem.

As far as non-sysadmin stuff goes, here are some of my other favorites:

• Bugzilla - this is a free and flexible bug tracking system. Highly recommended, especially for those people who don't think they need a bug tracking system. Our designers thought it was silly to start, but even they use it all the time now.
• CVS - Like bug tracking, most web sites don't think they need version control. Most web sites are wrong! CVSweb is also recommended.
• HTML Tidy - bad HTML in, good HTML out.
• WebTV Simulator - Sure, you and I don't use WebTVs, but a lot of people do. Browse your site with this to see how the other half surfs.
• VMWare - Along similar lines, VMWare is a Windows box emulator. I use it to keep a bunch of synthetic windows machines with a variety of OS versions and browser versions. It makes QA much easier.

And if there are particular tasks that have you stumped, come back and ask again. 'Round these parts, we have big toolboxes.

Another useful app under Linux is IPTraf, which will let you log these communications, including bytes sent and received from the respective destinations/sources.

A great tool for further locking down your firewall.

While I agree the labeling of this article is slightly skewed, I don't think anyone's being paranoid by running these types of activities through the microscope. Better to send a message to software vendors to back off on surreptitious exchanges of information from the consumer than further the proliferation of legislation to do this for us.

My 2

Linux rocks!!! www.dedserius.com

Big Brother System and Network Monitor NetSaint Network Monitor Network Monitor, Network Sniffer, Sniffer, IP Sniffer The Angel Network Monitor IPTraf - An IP Network Monitor Chesapeake's Network Monitor BigBen: Network Monitor Utility LG #28 ATM Network Monitor >> Brought to you by Google!

I nominate iptraf. It's an ncurses-based network monitor that does anything the best GUI network monitor could do, and does it better. If you haven't used it, you should try it out.