How is the Internet disconnected in a single state from the outside world?

Question

Freelance

Inspired by
www.forbes.ru/news/321483-minkomsvyazi-reshilo-otd...

The interlocutor of the newspaper in the government assured that we are not talking about creating an analogue of the “Chinese firewall”, but, according to him, “the ability to disconnect from the world and work inside the country is necessary”

1) How is it technically possible?
2) That is, we will not be able to receive any information at all, for example, from English-language programming resources?
3) And we will not be able to fulfill our obligations to foreign counterparties with whom we are currently working via the Internet?
upd 4) How will this affect the banking system?

Answer 1

All such attempts led to the fact that the connection to the Network was returned
4. On the technical side: banks can make transfers by teletype
On the practical side: margins on transactions will increase greatly due to the "image" of the country in which the bank is located
According to the "theory of cooking frogs" , you won't notice the moment when it's all over

Answer 2

you cut the cable and you're done, well, you lock the satellites.
a global shutdown will be in the event of a full-scale war, in this case that you, that your customers will not care, and fuck you bank, when at such a time there will be nothing to eat, and money is not tasty to chew.

Answer 3

1. Technically - blocking subnets on edge routers.
2. We can, but only from those inside the borders)
3. If they turn it off - how will you perform them without communication ?! Only if you come to them)

Answer 4

How do they do it?
Bam, And chopped off.
But seriously, a limited number of cables from border states enter the country, it is enough to install powerful equipment to analyze traffic on these cables, and cut off unwanted traffic - and bam you have no external Internet, although banks work as they should with SWIFT.