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Comment: In Soviet Russia, Mozilla maps YOU! (Score 0) 113

by Thor Ablestar (#45995037) Attached to: Mozilla Is Mapping Cell Towers and WiFi Access Points

There are political activists in Russia and worldwide who believe that mesh networks are usable as a backup communication medium during Internet blackout caused by political instability. The databases of WiFi geomapping just help the opponents to disrupt the backup communications.

Comment: In Soviet Russia, They test YOU! (Score 1) 167

by Thor Ablestar (#45982221) Attached to: Russia Backs Sending Top Students Abroad With a Catch

Before Putin, the testing of school graduates had a form of individual exams and essays performed by teachers. Now, in attempts to exclude corruption, the automated formal tests (YEGE - Yedinyi Gosudarstvennyi Ekzamen - The Uniform State Exam) are performed. The graduates just mark the numbers of correct answers.

I am not going to discuss the destruction of rational thinking by training the children to choose the only correct answer, especially when there is a political course such as history. I just inform you that the HIGHEST grades were obtained by peasants from Northern Caucasian republics such as Chechnya, Ingushetia and Daghestan (Remember Tsarnaev?). As a result, since the students are accepted to institutes according to YEGE only, they were accepted to institutes and it became clear that their grades are FAKE. And since it appeared impossible to eradicate corruption in Caucasian schools the only result was that the Russian institutes required the right to reinstate the entry exams, and some leading institutes obtained such a right. All other institutes accept them and just sell the good marks and diplomas.

Comment: Re:Encrypt The RAM? (Score 1) 222

by Thor Ablestar (#45973923) Attached to: TrueCrypt Master Key Extraction and Volume Identification

And there IS such a troyan. http://xakep.ru/post/58104/ (in Russian). Shortly, the BIOS of Chinese-made Intel boards contained a hidden hypervisor having access to everything. The BIOS had exactly the same (VISIBLE) contents that the official Intel BIOS should have but reflashing the BIOS with THE SAME (again VISIBLE) contents fully removed the hypervisor.

Comment: Re:No. (Score 2) 213

by Thor Ablestar (#45758627) Attached to: Ask Slashdot: Can Commercial Hardware Routers Be Trusted?

You are right. But there IS a FPGA strong enough to program it to be a processor. And there are FPGA configs to make some popular architectures out of it, including Sun Sparc. It's quite enough for 90 per cent of jobs you make on your Intel or AMD desktop. I don't believe that it's possible to create a bugged VHDL compiler or bugged FPGA. It' too low-specialized for such task, and any mismatch between FPGA and the VHDL's idea of it will just cause a total failure.

Comment: In Soviet Russia, Windows phases out YOU! (Score 1) 159

by Thor Ablestar (#45742893) Attached to: Ask Slashdot: Managing Device-Upgrade Bandwidth Use?

My own personal solution to this problem is to phase out every and each program, OS and everything other that downloads upgrades without owner's intervention, and there would be a really serious need in order to leave such a program, with specific traffic shaping crafted specifically for it. You understand what I mean.

Also, when I was a sysadmin I just installed a very complicated firewall (ipfw on FreeBSD) that limited speed of every separate group of users so the bandwidth hog would affect his own group only. And the sniffer was installed so that I could see the update sources and limit them accordingly.

Comment: Re:Christmas (Score 1) 42

You're kidding right? You spend a gazillion dollars sending them up there and they get a day off?

Yes. We Russians are LAZY. And the first thing we do after entering our Salyut or Mir is to REST. We have no reason to speed up since there are 6 months before Soyuz warranty expires. The only big expenses are food, water and oxygen.

You Americans have a Shuttle that can be in orbit 2 weeks at most. And you do everything as troubled bees under strict supervision of Houston.

Comment: Meaningless (Score 1) 277

by Thor Ablestar (#45720623) Attached to: Surviving the Internet On Low Speed DSL

To be meaningful the article should include:

The model of actual MODEM, not a Asus RT-16 that is a router only, (my hw is D-Link DSL-504T)
The version of MODEM firmware (My fw is OpenWRT Backfire)
The actual DSL protocol,
The distance from DSLAM and a model of cable, (1 kilometer 0.4 mm polyethylene)
The cappings (speed limits set by provider) and provider's policy in this matter (586k up, 8m down, unsupportive, no way to increase)
Uplink and downlink attenuation and noise margins (att 20 dB dl, 10 dB ul, margins about 20 dB)

And only with these data, it's possible to do something to improve the link.

Comment: Re:54Tbps? (Score 1) 107

by Thor Ablestar (#45712871) Attached to: Inside the Massive 2014 Winter Olympics WiFi Network

I noticed that, too. Assuming both 5Ghz and 2.4 Ghz radios at 450mbit each, you have 900 mbit per AP, X 2000, so 1.8 Tbit.

Have you assumed that radio waves are not TRANSVERSAL? Your 450 mbit are marketing and PR feces bovi. The nominal speed of 802.11n in 20 MHz band is 75 mbit/s. It's doubled when you use 40 MHz band and doubled once more when you use MIMO 2x2. But there are only 2 orthogonal polarizations, say, vertical and horizontal, so MIMO 3x3 will not give you anything valuable, except, may be, ability to use vertical polarization omni and 2 separate horizontals for all sides.

Then, remember that a normal cellular GSM structure uses 7 cells and 7 frequencies, and WiFi has only 4 distinct 2.4 GHz channels. But laws of physics are the same. You cannot use 5 GHz everywhere since universal clients are rare. So you cannot use 40 MHz and you get 150 mbit/s only. And the last nail to the coffin: Your US equipment brought here is legally prohibited by US authorities to use channels 12 and 13, and this prohibition is burnt to EEPROM, so forget about upper 40 MHz band at all.

Great spirits have always encountered violent opposition from mediocre minds. -- Albert Einstein

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