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A technical look at Iran's internet shutdowns

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Re: A technical look at Iran's internet shutdowns

#111

Post by CommenterPerson »

os2warpman wrote: post #109
CommenterPerson wrote: post #105

[flagged]

>Why should we care how a country manages their internal affairs? The government of Iran supplies Russia with weapons used in their invasion of Ukraine, funds Houthi rebels who fire weapons indiscriminately at international shipping off the coast of Yemen, supplies terrorist groups in southern Lebanon, and advised the Syrian government during the Syrian Civil War which kicked off the greatest wave of human migration…

Re. Whataboutism. At times it is worthwhile looking in the mirror. In 2003 we bombed and occupied Iraq based on fabrications and propaganda by the Bush administration. According to the Lancet, there were 650,000 excess deaths attributed to violence 95% confidence. The middle east was thrown into turmoil and the effects are very much being felt by neighboring countries and Europe.

Sooo .. if we are curious about how other countries run their affairs, maybe we should study high school education in Finland. They did a remarkable job of turning their system around to where their kids outperform American kids on the average.

https://en.wikipedia.org/wiki/Lancet_surveys_of_Iraq_War_cas...

Re: A technical look at Iran's internet shutdowns

#112

Post by mschuster91 »

icedchai wrote: post #104
mschuster91 wrote: post #69

Earlier quoted context omitted.

> Wikipedia, forums like this one, instant messengers, etc all worked fine The problem is, websites got wasteful. You're not going to get any modern website - including Wikipedia - to load in anything close to usable waiting times over a modem speed constraints. HN and maybe Old Reddit are an exception but HN is a niche forum and Old Reddit is probably going to get dumped once Reddit manages to port over all features…

Also, keep in mind that APRS is generally 1200 baud (though I did see some mention of 9600 now.) This is way worse than anything most people experienced during the dialup Internet days.

I was talking about AX.25, that allows for higher bandwidth than its subset APRS or POCSAG. But yeah, not that much, 9.600 baud is all you're gonna get on UHF/VHF, if you stick with HF it's 300 baud...

Re: A technical look at Iran's internet shutdowns

#113

Post by takipsizad »

CommenterPerson wrote: post #111
os2warpman wrote: post #109

Earlier quoted context omitted.

>Why should we care how a country manages their internal affairs? The government of Iran supplies Russia with weapons used in their invasion of Ukraine, funds Houthi rebels who fire weapons indiscriminately at international shipping off the coast of Yemen, supplies terrorist groups in southern Lebanon, and advised the Syrian government during the Syrian Civil War which kicked off the greatest wave of human migration…

Re. Whataboutism. At times it is worthwhile looking in the mirror. In 2003 we bombed and occupied Iraq based on fabrications and propaganda by the Bush administration. According to the Lancet, there were 650,000 excess deaths attributed to violence 95% confidence. The middle east was thrown into turmoil and the effects are very much being felt by neighboring countries and Europe. Sooo .. if we are curious about how o…

two wrongs dont make one right

Re: A technical look at Iran's internet shutdowns

#114

Post by icedchai »

mschuster91 wrote: post #112
icedchai wrote: post #104

Earlier quoted context omitted.

Also, keep in mind that APRS is generally 1200 baud (though I did see some mention of 9600 now.) This is way worse than anything most people experienced during the dialup Internet days.

I was talking about AX.25, that allows for higher bandwidth than its subset APRS or POCSAG. But yeah, not that much, 9.600 baud is all you're gonna get on UHF/VHF, if you stick with HF it's 300 baud...

Heh. My first dialup modem was 1200 baud, way back in 1987.

Re: A technical look at Iran's internet shutdowns

#115

Post by coderatlarge »

ACCount36 wrote: post #93
robertlagrant wrote: post #87

Earlier quoted context omitted.

> Starlink Only when (if) Stalink removes the need for base stations and just sends the traffic directly between satellites.

It already does that. That's how Starlink works over the ocean.

does that mean the authorities can’t locate someone transmitting or receiving to/from starlink? in many places the consequences of detection could be dire…

Re: A technical look at Iran's internet shutdowns

#116

Post by nickthegreek »

dmbche wrote: post #101
LadyCailin wrote: post #80

Earlier quoted context omitted.

I dunno, the reaction to the anti-porn laws in Texas haven’t gotten too much pushback, as far as I’m aware. Sure, keeping kids off porn is good, but do you trust the Christian nationalist government of Texas to only define porn as the thing that needs logged identification?

I think it's trivial for people to circumvent this ID, no? So no need to pushback. Kind of like everyone going 120 on the highway

how is it trivial to circumvent?

Re: A technical look at Iran's internet shutdowns

#117

Post by swores »

Tangurena2 wrote: post #100
swores wrote: post #20

Earlier quoted context omitted.

Am I right to assume that it's easy to locate the source of ham radio signals? i.e. if there's a blanket ban, can you use your radio hidden in your house or can the government easily find out that the user they've noticed on the airwaves is located there and knock down your door?

Very easy. "Huff Duff" is WW2 technology. https://en.wikipedia.org/wiki/High-frequency_direction_findi... The units used for detecting and locating clandestine transmitters started WW2 as large truck mounted facilities to hand carried units (with antennas) that fit inside suitcase-sized containers. Modern ham groups engage in transmitter hunting as part of organized events. Bunny hunting and fox hunting are alternate…

Thanks!

Re: A technical look at Iran's internet shutdowns

#118

Post by swores »

ridgeguy wrote: post #27
swores wrote: post #20

Earlier quoted context omitted.

Am I right to assume that it's easy to locate the source of ham radio signals? i.e. if there's a blanket ban, can you use your radio hidden in your house or can the government easily find out that the user they've noticed on the airwaves is located there and knock down your door?

It's very easy, has been for a long time. See the story of Israeli Eli Cohen, an operative in Syria. https://en.wikipedia.org/wiki/Eli_Cohen

Thanks!

Re: A technical look at Iran's internet shutdowns

#119

Post by swores »

mschuster91 wrote: post #70
swores wrote: post #20

Earlier quoted context omitted.

Am I right to assume that it's easy to locate the source of ham radio signals? i.e. if there's a blanket ban, can you use your radio hidden in your house or can the government easily find out that the user they've noticed on the airwaves is located there and knock down your door?

> can the government easily find out that the user they've noticed on the airwaves is located there and knock down your door? Sadly, yes. A bunch of SDRs spread over the whole country with precise clocks or a scheme like the one used in ADS-B MLAT reception (that's based on using the internal SDR clocks without requiring precise clocks on the host) is enough to use multilateration to hone in on any kind of signal, ev…

Thanks!

Re: A technical look at Iran's internet shutdowns

#120

Post by dmbche »

nickthegreek wrote: post #116
dmbche wrote: post #101

Earlier quoted context omitted.

I think it's trivial for people to circumvent this ID, no? So no need to pushback. Kind of like everyone going 120 on the highway

how is it trivial to circumvent?

VPN use is legal in texas, for example

Edit0: I checked, as this seemed self evident, but it's seemingly perfectly fine for residents to use VPNs and for adults to visit porn sites on or off a VPN. Obviously not for minors but that's not the point.

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