Domain: tech-faq.com
Stories and comments across the archive that link to tech-faq.com.
Comments · 32
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Re:i work in enterprise datacenter
If a single device brings down your entire data center, you've got design problems and your architect should be fired or retrained.
Go fire the architect. http://www.tech-faq.com/how-do...
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Re:How I first got introduced to the Internet
Actually, baud is a measurement of signal change, which doesn't always correlate to bit rate. At one time, yes it often did, which lead to the use of "baud" and "bps" being used interchangeably, yet erroneously. When the use of compression grew in modem transfers, baud often stayed the same, or rose slower than the bit rate due to the compression.
Wikipedia Baud article
about.com article
tech-faq.com articleI remember the days of connecting to a BBS at 110bps. You had time to go pour coffee while waiting for the ANSI welcome screen to load.
*shakefist* Now git off mah lawn! Dagnabbit, someone stole muh false teeth... *grumble grumble*
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Re:Not Worth It
How long was your umbilical cord? You'd be hard pressed to get enough stem cells out of a few vials of blood to build new lungs. The chances are that by the time they can get these stem cells to replicate, they'll understand enough about cell manipulation to grow completely viable stem cells from adult tissue....
Having an equal number of stem cells as there are cells in a lung or two would indeed be difficult. However even in that case, the process used to tell the stem cells to convert into whatever cells has it's own set of problems.
Current state-of-the-art in organ printing only involves a tiny amount of initial stem cells. They use a special solution that becomes the organs scaffolding, to which the stem cells can attach and multiply, giving exponential growth.
Here is an interesting article on the topic that seems to have been posted just today.
http://www.tech-faq.com/organ-growing.htmlA quick google search for "3d organ printing stem cells" turns up a bunch of medical and scientific papers on how far this field is advancing in the past year alone.
Despite the successful organ growth and organ printing that has already been done, it's just not yet ready for mass production.
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Re:Windows
You should be able to do what you're describing with group policy. It's designed more for roaming profiles, but it should work for moving c:\users off of an SSD.
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Re:Online gaming
While not a Windows evangelist by any means, I can tell you that, while it requires a short trip to registry-land, changing a MAC addy in Windows is not really that hard to do.
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Here ya go
Scrounger's guide to Sat TV
http://www.nmia.com/~roberts/scrounge
Free to air Sat receivers
http://www.tech-faq.com/free-to-air-receivers.html
If you don't want to go TV, you can make spiffy outdoor table canopies from them, or use them for home solar thermal alt energy projects, once you have a tracker. I've seen them used for the tops/roofs on backyard small buildings as well.
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latency oh latency.
What could possibly go wrong? I said.
My network should fly over head!
Through the air my data will go.
To where, to who, I wouldn't know?
Thanks to WEP my data is Encrypted.
At least until a hack has been scripted.
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Re:Big deal
Big deal. No one still uses their cellphone to make calls anyway.
"GSM is the de facto wireless telephone standard in Europe. GSM has over one billion users worldwide and is available in 190 countries. Since many GSM network operators have roaming agreements with foreign operators, users can often continue to use their mobile phones when they travel to other countries. ( http://www.tech-faq.com/gsm.shtml )".
CC. -
Re:Some background about Matt Blaze
The entire A,B,C,D column is @ 1633hz. Ergo, the 'C' key is 1633 Hz (column) + 852 Hz (row) -- two tones because of the D (dual) in DTMF. The full list is available here.
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Re: malicious code ..
"There are lots of Operating Systems involved. They just happen to originate from the same place"
What Operating System does the extended botnet run on that is used to hose the Internet with spam?
--
I can't refute the top post so I'll just get my sock.Puppet accounts to mod it FUNNY -
Re:So..
How much energy is used in generating that 10,000 degree plasma, hmm? Less than what it'll output by incinerating trash? I'd like to see that.
It's apparently self sustaining.
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You are even more confused.
First, SMB is nothing like FTP. It's a whole different protocol, which uses a different network transport(when dealing with NetBEUI), with a different set of clients. FTP is a pure file transfer protocol, which uses pure TCP/IP.
Second dns/bind does not understand NetBIOS and doesn't do NetBIOS name resolution. That's wrong protocol and wrong name resolution service.
Just FYI ; )
Here's a link to better help you understand how NetBIOS name resolution works:
http://www.tech-faq.com/understanding-netbios-name-resolution.shtml
Here's just one of the differences FTA:
"The NetBIOS namespace is flat. This is different to the hierarchical namespace of Domain Name System (DNS). Because the NetBIOS namespace is not as scaleable as DNS, it does not work well for large networks. NetBIOS naming should be used for private networks."-Viz
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It's times like these...
...when the Day One Advantage simply isn't sufficient. That's when you go for the 0-day advantage. Monetisation creates antagonistic customers and reduces the player base. Sure, you may get more out of that player base, but there is going to be a larger-than-otherwise percentage that just doesn't want to deal with it--and suddenly you have cracked servers.
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TV, Ham radio, etcI think the most obvious use would be to receive satellite TV, there's quite a bit of free stuff out there still. One of those fancy new mpeg receivers might be helpful. http://www.tech-faq.com/free-to-air-satellite.shtml
You could also:
- Communicate over satellites. There are many Amateur Radio satellites in orbit, and a BUD is great for talking to them: http://www.amsat.org/amsat-new/index.php
- Communicate via the earth-moon-earth path (EME, AKA moonbounce). http://en.wikipedia.org/wiki/EME_(communications)
- Downlink NOAA weather satellites.
- Do radio astronomy: http://www.signalone.com/radioastronomy/telescope/
- Cover it in foil and have the worlds biggest solar hot dog cooker.
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A little knowlege ...
Have you ever heard the expression a little knowlege is a dangerous thing? Your clue should have been the definition of the word duplex.
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Re:America descends into the dark ages of broadban
You need to do some reading up on how IP works.
http://www.tech-faq.com/tcp-sequence-prediction.shtml -
MTBF Curve
I would expect that MTBF for new and old kit would differ significantly, and found http://www.tech-faq.com/mtbf.shtml which defines the 'MTBF Curve' - the variation of MTBF across a a product's lifecycle.
However, by the vary nature of the beast, this cannot be grasped by a single number, which is what marketeers prefer.
This would be a nice application for Sparklines [http://en.wikipedia.org/wiki/Sparkline] -
Re:Obligatory
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Re:Crazy with command lines
not everything is configurable from within the GUI
Actually this isn't anything new for Microsoft, in fact they've gone so far as to require editing your system DLLs with a hex editor to adjust basic network configuration settings. And people think us linux hackers are amazing compiling source code, how about those windows guys reverse engineering binary code in DLLS. :) -
Re:Firewall Schmirewall
They're both forms of transportation, though. In that case, are you trying to argue for or against the parent?
http://www.tech-faq.com/firewall.shtml -
he forged ANI, not caller-ID
911 systems use ANI, not caller-ID. The difference is explained below...
From http://www.tech-faq.com/ani-automatic-number-identification.shtml
ANI (Automatic Number Identification) is a system utilized by telephone companies to identify the DN (Directory Number) of a calling subscriber.
ANI serves a function similar to Caller-ID, but utilizes different underlying technology. In addition, although Caller-ID can be blocked by prefixing a call with *67, ANI is (usually) impossible to block.
ANI was originally developed for telephone company billing purposes. ANI technology is also now offered to commercial customers who may benefit from knowing who is calling them. In addition, ANI is one of the core technologies behind the 911 emergency service.
ANI data is usually transmitted in-band using multi-frequency (MF) signaling. However, ANI data can also be transmitted separately if you have an ISDN PRI. -
Re:Windows is SECURE by design.I always hold this as the first rule to security:
If someone else has physical access to your box, it is no longer yours. Apparently there is a back door BIOS password of "merlin" for IBM BIOSes (reference: How do I reset a BIOS password?) which also has a hardware reset (reference: How do I reset an IBM ThinkPad BIOS password?) by shorting the CMOS.
Manufacturers always make it possible to circumvent passwords since users have a tendency to forget their passwords ("123456 - that's the combination to my luggage!").
There appears to be a way to get read access to BIOS as well, with $5 in parts from Radio Shack. Hacking IBM Thinkpad Bios Password
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Re:Windows is SECURE by design.I always hold this as the first rule to security:
If someone else has physical access to your box, it is no longer yours. Apparently there is a back door BIOS password of "merlin" for IBM BIOSes (reference: How do I reset a BIOS password?) which also has a hardware reset (reference: How do I reset an IBM ThinkPad BIOS password?) by shorting the CMOS.
Manufacturers always make it possible to circumvent passwords since users have a tendency to forget their passwords ("123456 - that's the combination to my luggage!").
There appears to be a way to get read access to BIOS as well, with $5 in parts from Radio Shack. Hacking IBM Thinkpad Bios Password
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Definately true
Darn, you stole my point. But to add to that for those that want to see this in action (hey, the RIAA likes screenshots, right):
See Here, or here, or just here
You've got one card allowing you to set or clone (copy from the connecting machine) a MAC address, another allow to type in the MAC segments, and then a bunch of google results in general for the interfaces to this.
And this is just for routers, mind. It's also quite easy to spoof MAC using windows, easy on linux/BSD using ifconfig, or see here for info on all the common OS's.
So what can you do with this?
Well with a router it makes it easy (as mentioned in the parent) to configure so that the ISP thinks a given PC is connected... thus skipping the issues when you have either the computer or the router plugged directly to the DSL/cable modem.
With a PC you can test various DHCP settings, pretend to be somebody else and nab their IP (the dhcp serving machine will generally assume you are whomever your MAC states you are), get onto MAC-secured wireless, and many other things. There are plenty of legit uses, but certainly many other cases where one an online "identity" could be easily misrepresented. -
Re:Erm....?
The other two wires are for power. Notice how the phone works during a blackout?
Do tell me how using the other two wires goes though. I think you'll have a lot of fried DSL hardware.
So very, very wrong.
In a standard telephone wiring situation (RJ11 jacks, or the old non-modular jacks), the green and red wires are used for the first phone line. The yellow and orange are unused (or a second line). An easy way to remember the pairs are Christmas (green + red) and Halloween (yellow + orange).
There is no separate power line.
http://www.tech-faq.com/telephone-wiring.shtml
In RJ45, the center (first) pair is blue + blue/white.. Hanukkah maybe? :) -
Re:They charge that much for running "DVD Decrypte
DVD Decrypter can be used to remove Macrovision, which is a violation of the DCMA.
Really? Macrovision does not control access to the DVD at all. Macrovision degrades the signal somewhat when recording a DVD to VHS video tape, or when recording VHS to VHS. Macrovision does this by playing with the gain control.
Incidentally, Macrovision doesn't work with 8mm & Betamax video tape. Are they illegal under thee DCMA? Of course not. -
Re:That could've been a good feature!
Ah, I see.
:-)
I know it's far too late to check this, but maybe this would be useful if there's a next time:
http://www.tech-faq.com/ibm-thinkpad-bios-password .shtml -
Maybe we should replicate these results...
...using DSS rain fade.
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Re:Online backup? - Capacity
Please enlighten me, if you experience is different.
From the ad-infested http://www.tech-faq.com/incremental-backup.shtml
A incremental backup is a backup of every file on a filesystem which has changed since the last backup.
The alternatives to an incremental backup are differential backup and full backup.
An incremental backup is the fastest backup and requires the least storage space on the mackup media. However, incremental backups also require the longest time and the most tapes to restore.
Incremental backups should be used only in environments where backup time or backup storage media are extremely constrained. For most environments, a weekly full backup and a daily differential backip represent a better plan.
If you perform a full backup on Sunday along with incremental backups every night and the system crashes on Thursday, you will need to restore the full backup from Sunday along with the incremental backups from Monday, Tuesday, and Wednesday.
In contrast, if you perform a full backup on Sunday and a differential every night, when the system crashes on Thursday you will only need to restore the full backup from Sunday and the differential backup from Wednesday.
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Re:Answers
"There are many methods which have been used to gain root priveledges from a Unix SUID (Set User ID) script or program." -- What Security problems...
SETUID != SETUID ROOT
Badly used setuid is a nightmare.
Properly used it's paradise. -
AnswersCan other commercial OS vendors (how many are there
:) adopt a similar stance?It'd be nice.
Will you be inconvenienced by the inability to run setuid scripts on MacOS X?
Not at all. SUID scripts are a huge hole. See What security problems exist with SUID scripts and programs? for an example. SUID scripts are usually created by lazy people who can't be bothered to figure out permissions.
Which other features/capabilities (in any OS) would you like to have removed?
I'd like to see the instant-flamewar generator removed.
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Re:Er, what do you mean "strange"?
In a word, rootkits.
In theory, once a root-level compromise has occurred, you can trust nothing a computer says anymore. Crackers have, through steady effort, made that almost 100% true, and if they aren't there already, they don't have far to go.
No binary can be trusted on a hacked system.
For the curious, I recomend Googling "rootkit"; there are a lot of helpful resources out there.