Red Hat Linux Archives - The Silicon Underground David L. Farquhar on technology old and new, computer security, and more Tue, 04 Nov 2025 02:38:12 +0000 en-US hourly 1 https://kerosin.digital/rss-chimp16321610 Is the Windows firewall safe enough? https://dfarq.homeip.net/why-the-windows-firewall-is-ok/?utm_source=rss&utm_medium=rss&utm_campaign=why-the-windows-firewall-is-ok Thu, 17 May 2012 12:05:05 +0000 https://dfarq.homeip.net/?p=5500 Is the Windows Firewall safe enough? I wish more people would ask that question rather than make assumptions. I wish I had a nickel for every time I’ve heard an unsubstantiated statement like “Windows firewall is junk.” I went looking,

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Why my ramdisk techniques don’t work with XP https://dfarq.homeip.net/why-my-ramdisk-techniques-dont-work-with-xp-2/?utm_source=rss&utm_medium=rss&utm_campaign=why-my-ramdisk-techniques-dont-work-with-xp-2 https://dfarq.homeip.net/why-my-ramdisk-techniques-dont-work-with-xp-2/#comments Thu, 10 Jul 2003 02:36:21 +0000 https://dfarq.homeip.net/?p=1033 I got a question today in a roundabout way asking about ramdisks in Windows, specifically, where to find my instructions for loading Win98 into a ramdisk, and how to do the same in XP.

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Sam’s Club offers $299 Red Hat Linux boxes https://dfarq.homeip.net/sams-club-offers-299-red-hat-linux-boxes-2/?utm_source=rss&utm_medium=rss&utm_campaign=sams-club-offers-299-red-hat-linux-boxes-2 https://dfarq.homeip.net/sams-club-offers-299-red-hat-linux-boxes-2/#comments Thu, 06 Feb 2003 00:57:44 +0000 https://dfarq.homeip.net/?p=1054 I just read today that Sam's Club is about to start offering 1.1 GHz Duron PCs running Red Hat Linux for $299.

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Trolling the web for nothing in particular https://dfarq.homeip.net/trolling-the-web-for-nothing-in-particular/?utm_source=rss&utm_medium=rss&utm_campaign=trolling-the-web-for-nothing-in-particular https://dfarq.homeip.net/trolling-the-web-for-nothing-in-particular/#comments Tue, 19 Feb 2002 17:11:34 +0000 https://dfarq.homeip.net/?p=500 Yes, Brian, baseball will soon return. I hate the things Major League Baseball does (Bob Costas once likened choosing sides between the players and the owners to choosing sides between Iran and Iraq), but we've chosen to stay together for the kids. I'm sure everyone who cares (and some who don't) can guess what I think of Bud Selig, but I'll tell you anyway, soon enough.

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Optimizing a Linux box in-place https://dfarq.homeip.net/optimizing-a-linux-box-in-place/?utm_source=rss&utm_medium=rss&utm_campaign=optimizing-a-linux-box-in-place https://dfarq.homeip.net/optimizing-a-linux-box-in-place/#comments Wed, 13 Feb 2002 14:49:36 +0000 https://dfarq.homeip.net/?p=520 Here's the Linux bit I promised yesterday. I wrote it much earlier, so I might as well throw it out there.

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It’s the best of times, it’s the worst of times… https://dfarq.homeip.net/its-the-best-of-times-its-the-worst-of-times-2/?utm_source=rss&utm_medium=rss&utm_campaign=its-the-best-of-times-its-the-worst-of-times-2 https://dfarq.homeip.net/its-the-best-of-times-its-the-worst-of-times-2/#comments Thu, 24 Jan 2002 02:10:56 +0000 https://dfarq.homeip.net/?p=1109 I hate arguing with women. When guys fight, they fight hard, and they don't always fight fair, but when the fight's over, it's pretty much over. You settle it. Maybe you seethe for a little bit. But eventually, assuming you both still can walk, you can go to hockey games together almost like it never happened.

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What on earth is going on? https://dfarq.homeip.net/what-on-earth-is-going-on/?utm_source=rss&utm_medium=rss&utm_campaign=what-on-earth-is-going-on https://dfarq.homeip.net/what-on-earth-is-going-on/#comments Sat, 19 Jan 2002 17:51:09 +0000 https://dfarq.homeip.net/?p=544 AOL-Time Warner in talks to buy Red Hat? I found this this morning. It's intriguing, but I can't decide if a buyout would be a good thing or a bad thing. After all, Netscape was in decline when AOL bought it. It nosedived afterward. Obviously, the problem was twofold. When AOL acquired Netscape, they didn't acquire all of its mindshare. Some of the most talented people got fed up and left. You can take Jim Barksdale or you can leave him. The loss of Marc Andreesen and Jamie Zawinski, though, was substantial.

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Optimizing Linux. Part 1 of who-knows-what https://dfarq.homeip.net/optimizing-linux-part-1-of-who-knows-what/?utm_source=rss&utm_medium=rss&utm_campaign=optimizing-linux-part-1-of-who-knows-what https://dfarq.homeip.net/optimizing-linux-part-1-of-who-knows-what/#comments Tue, 31 Jul 2001 17:21:51 +0000 https://dfarq.homeip.net/?p=677 Optimizing Linux. I found this link yesterday. Its main thrust is troubleshooting nVidia 3D acceleration, but it also provides some generally useful tweakage. For example:

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01/18/2001 https://dfarq.homeip.net/01182001/?utm_source=rss&utm_medium=rss&utm_campaign=01182001 Thu, 18 Jan 2001 05:00:00 +0000 https://dfarq.homeip.net/?p=887 A red-hatted worm. Wow. You sure don't hear about this often.  There's a worm that exploits a weakness in Red Hat Linux 6.2 and 7.0. Coined the Ramen worm, it defaces Web pages with a tribute to Ramen noodles. This is the first of these that I've heard of, and I'll say it's an example of why multiple distributions are a good thing. Other distributions aren't vulnerable to this, so the spread slows. Hardening Red Hat against this isn't hard--head to securityfocus.com, which anyone who administers Linux boxes for a living needs to be reading anyway. Exploits and fixes are generally documented and fixed long before anything can take advantage of them.

The number of the day is... 114. That's my IQ, at least according to the 10-minute test I took yesterday in between phone calls while two of my coworkers were arguing about the validity of IQ tests. I popped up, announced my score, fueled the debate and then left. I was feeling vindictive I guess.

Generally, as I understand it, 100 is average. If you're in the 130s, you're gifted. I've been around some 170s and I keep up with them with no problems. I knew a 190 once. She gave me some problems, partly because I couldn't understand her when she started spouting off in Latin. Solo hablo ingles y un poco espanol--un muy poco espanol. And I think another part of the problem was I found her boring, too refined.

What'd my coworkers have to say about my score? One of them used me to dismiss all validity of IQ tests--no way that guy's a 114! His problem-solving ability is too good, and that memory, and and and... Well, slightly above-average people generally don't write their first book and publish it before their 25th birthday. The coworker arguing in favor of IQ tests blamed my score on environment and poor preparation. I admit, my preparation was awful--I took it on spur of the moment, didn't check any answers, took a 20-minute test in 10, took a couple of phone calls while I was doing it... So I was hardly scientific.

But what do we mean when we call someone "smart," anyway?

Good memory? My dad sure had a great memory. I have a pretty good one too. I can probably tell you the starting lineup of every Kansas City Royals team from 1980 to last season. (I'll spare you). And obscure computer information... don't get me started. But nobody has a memory as good as a computer. Some would say the only thing dumber than a computer is a toaster, but I wonder, because my toaster sure works a whole lot better than my computer does most of the time.

Intelligence? Intelligence is the ability to reason and analyze. Some people do this really well. Others don't. Most people who've watched me work say I have good troubleshooting and analysis skills, though I often score poorly on tests that measure that. Yet when I took the ACT, I did everything wrong. I went out with my girlfriend the night before. I stayed up late. I decided to come home and study afterward. Then I went in and scored a 30 or 31 on my first try. For those unfamiliar with the ACT, a score of 30 gives you an automatic scholarship from the state of Missouri at any state university. I think 36 is the highest possible score. A score of 26 gets you automatic admission at most state universities. As I recall, I scored in the 98th percentile in social studies, 99th in English, low 80-something in math and high 80-something in science. (Just call me Mr. Humanities.)

Common sense? I guess this is ability to deal with the real world. I've run into people who are seriously deficient here. That girl I knew with a 190... She had virtually none. She was always finding herself in situations she couldn't think her way out of. Some people call this "street smart," and I think that's a good description of it. Common sense isn't as common as it should be.

Wisdom? I think wisdom's the most important of the bunch. It's the ability to use what you've got. I scored very poorly on one proficiency test that measured my ability to analyze. My biggest beef was that it was heavily slanted towards the mathematically minded, and I don't have that inclination--my math numbers were what dragged down my ACT score the most--and the last time I had to juggle numbers a lot was in 1994. One time when someone used that score against me, I retorted, "Yeah, so I don't have as much as some of those guys. At least I know how to use what little I've got, and they certainly don't!" Is it possible that my intelligence and common sense are only slightly above average, and that I use memory and wisdom to compensate? Maybe.

I know someone who doesn't think she's smart. And maybe she lacks in one of those areas. I don't know. What I do know is she knows how to get things done. And I've never felt any need to talk down to her. When we've talked, I've always had the sense she's understood what I'm talking about--and we've talked some pretty heavy subjects at times. Remember my line of work.

When I think smart, I think of those guys I know who had 170-plus IQs and pontificated a lot. She doesn't do that. But when I think dumb, she doesn't come to mind either. My former neighbor who believed every conspiracy theory out there and who believed The X-Files is a documentary does. He also tended to overuse profanity and thought very highly of his own intelligence.

I think it was a Supreme Court justice who once said he couldn't define the word obscene, but he knew it when he saw it. I think the same goes for intelligence. It's hard to define and even harder to measure, but we know it when we see it.

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Windows keyboard tricks https://dfarq.homeip.net/windows-keyboard-tricks/?utm_source=rss&utm_medium=rss&utm_campaign=windows-keyboard-tricks Wed, 15 Nov 2000 05:00:00 +0000 https://dfarq.homeip.net/?p=952 Those promised keyboard tricks. To get a Windows key, download the Kernel Toys. The keyboard applet, which works under 95 and 98, allows you to remap the caps lock, control, or alt keys to a Windows key. You can also remap the caps lock key to control or alt if you want. 

To assign My Computer to a hotkey, create a new shortcut with the following command line:
explorer.exe /n,/e,::{20D04FE0-3AEA-1069-A2D8-08002B30309D}

Next, click on the shortcut key and hit a key (I suggest "m" or "c") and that'll give you instant two-pane access to My Computer any time you hit ctrl-alt and that key.

If you want single-pane access (I don't think it's as useful, but hey), use this command line instead:
explorer.exe /n,::{20D04FE0-3AEA-1069-A2D8-08002B30309D}

I finally fixed my firewall. I souped up the firewall a while back, then it never worked again. (I guess that's the ultimate in security, eh? No one can hack in if you're offline.) I forgot which ethernet card was outgoing and which was pointing inward, to my LAN. Finally, I tried stopping and restarting PMFirewall, which printed my network configuration. When both NICs were assigned to the address 192.168.0.1, I knew I was in trouble. With that tip-off, fixing it took just a matter of minutes.

Speaking of Linux, a speed tip. If you're running Red Hat Linux as a NAT/IP masquerade gateway to share an Internet connection, do yourself a favor and install the BIND and caching-nameserver RPMs, then set your first DNS entry on your other PCs to your gateway's IP address. This will make your proxy server look up DNS addresses for you and store them, reducing network traffic slightly but noticeably. The overhead is minimal; I've got Steve DeLassus running IP masquerade and caching nameserver on a 486SX/20 and it's more than up to the task. For a small home network, a 386SX/16 has enough horsepower as long as it meets your distribution's minimum memory requirements. I'd be more comfortable with a 50 MHz or faster 486 for a small office, but that's as much due to expected age and reliability as it is to CPU requirements.

If you're running a close derivative of Red Hat (Mandrake is certainly close enough, and I believe even Caldera and TurboLinux are as well), go ahead and download Red Hat's caching nameserver RPM. It's just a couple of short text files, but it's easier to download and install an RPM than it is to key them in.

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