BEIJING, CHINA - JANUARY 25: A Chinese traveler rests as she holds her mobile phone on a crowded train between Beijing and Shijiazhuang, on January 25, 2017 in Hebei province, northern China. Millions of Chinese will travel home to visit families in what is often called the largest human migration during the Spring Festival holiday period that begins with the Lunar New Year on January 28, 2017.  (Photo by Kevin Frayer/Getty Images)
Kevin Frayer/Getty Images AsiaPac/Getty Images
BEIJING, CHINA - JANUARY 25: A Chinese traveler rests as she holds her mobile phone on a crowded train between Beijing and Shijiazhuang, on January 25, 2017 in Hebei province, northern China. Millions of Chinese will travel home to visit families in what is often called the largest human migration during the Spring Festival holiday period that begins with the Lunar New Year on January 28, 2017. (Photo by Kevin Frayer/Getty Images)
Now playing
02:31
China exports its model of internet sovereignty
ORLANDO, FLORIDA - FEBRUARY 28:  Former President Donald Trump addresses the Conservative Political Action Conference held in the Hyatt Regency on February 28, 2021 in Orlando, Florida. Begun in 1974, CPAC brings together conservative organizations, activists, and world leaders to discuss issues important to them. (Photo by Joe Raedle/Getty Images)
Joe Raedle/Getty Images
ORLANDO, FLORIDA - FEBRUARY 28: Former President Donald Trump addresses the Conservative Political Action Conference held in the Hyatt Regency on February 28, 2021 in Orlando, Florida. Begun in 1974, CPAC brings together conservative organizations, activists, and world leaders to discuss issues important to them. (Photo by Joe Raedle/Getty Images)
Now playing
01:32
CNN correspondent: This is a nightmare situation for Facebook
Now playing
04:11
Facebook decision 'is wait and see,' says former public policy director
Gravity Industries
Now playing
01:07
Watch these UK commandos fly over the sea with new jet pack
Congress hearing mishap
Twitter/The Hill
Congress hearing mishap
Now playing
03:39
From 'Galaxy Quest' to F-bombs: A year of video conference mishaps
Police used an image of the suspect taken from a fake driver's license left at the scene (left) to run a facial recognition scan. It returned a "high profile comparison" to Nijeer Parks (right). (Woodbridge Police Department)
Woodbridge Police Department
Police used an image of the suspect taken from a fake driver's license left at the scene (left) to run a facial recognition scan. It returned a "high profile comparison" to Nijeer Parks (right). (Woodbridge Police Department)
Now playing
06:33
He was innocent. But a facial recognition 'match' got this Black man arrested
Galaxy Book Pro 360 13 inches.
Samsung
Galaxy Book Pro 360 13 inches.
Now playing
01:39
Samsung's new laptops are almost smartphones
Now playing
01:37
Elon Musk taunts Jeff Bezos over NASA contract
Now playing
05:42
How NBA Top Shot turned dunks into digital gold
Now playing
03:09
Electronic skin could track your vital signs
SAN FRANCISCO, CALIFORNIA - OCTOBER 04: Project Include Co-Founder & CEO Ellen Pao speaks onstage during TechCrunch Disrupt San Francisco 2019 at Moscone Convention Center on October 04, 2019 in San Francisco, California. (Photo by Steve Jennings/Getty Images for TechCrunch)
Steve Jennings/Getty Images
SAN FRANCISCO, CALIFORNIA - OCTOBER 04: Project Include Co-Founder & CEO Ellen Pao speaks onstage during TechCrunch Disrupt San Francisco 2019 at Moscone Convention Center on October 04, 2019 in San Francisco, California. (Photo by Steve Jennings/Getty Images for TechCrunch)
Now playing
04:53
Ellen Pao: The biggest myth about tech is that work is a meritocracy
AirTag
Apple
AirTag
Now playing
01:17
See AirTag, Apple's new device for tracking your lost stuff
Now playing
01:09
Google Earth's new Timelapse feature shows 40 years of climate change in just seconds
Elon Musk's Neuralink says this monkey is playing Pong with its mind
From Neuralink/Youtube
Elon Musk's Neuralink says this monkey is playing Pong with its mind
Now playing
01:41
Elon Musk's company says this monkey is playing Pong with his mind
CNN
Now playing
02:36
The truth behind Covid-19 vaccines for sale on the dark web
Now playing
05:41
NFTs have completely transformed these digital artists' lives
(CNN Business) —  

On Friday, a controversial new law took effect in Russia: The so-called “sovereign internet” law, which mandates the creation of an independent internet for Russia.

In effect, Moscow has given itself the power to erect a sort of digital Iron Curtain around its networks. But will it force the change from a freewheeling internet to a purely Russian one?

That’s what tech companies and Russian internet users alike will be watching as the law takes effect.

Here’s what the measure entails: Earlier this year, Russian President Vladimir Putin signed into law new rules that would enable the creation of a national network that can operate independently from the rest of the world. Among other things, the law allows Roskomnadzor, Russia’s telecoms agency, to shut the country off from external traffic exchange, creating a purely Russian web.

The government has said the regulations are part of an effort to protect Russia by creating the ability to sustain a fenced-off national network, in the event that a foreign power interferes with Russian cyberspace. The official newspaper Rossiiskaya Gazeta said the law coming into force should not affect internet users, but it “will ensure the availability of communication services in Russia in case of threats.”

That’s clear in theory, but ju