russian prefixes

Fri Jul 30 15:45:22 UTC 2021

On Fri, Jul 30, 2021 at 10:57 AM Christopher Morrow <morrowc.lists at gmail.com>
wrote:

>
>
> On Thu, Jul 29, 2021 at 9:07 PM Denys Fedoryshchenko <
> nuclearcat at nuclearcat.com> wrote:
>
>> On 2021-07-29 20:46, Randy Bush wrote:
>> >> Looks like it did shown on news only.
>> >
>> > :)
>> >
>> > i wondered
>> They have installed devices called "TSPU" on major operators.
>> Isolation of specific networks is done without changing BGP
>> announcements, obviously.
>>
>
> Denys, can you say anything about how these TSPU operate?
>

Denys is, I'm sure, 'lmgtfy'ing me right now but:

https://therecord.media/academics-russia-deployed-new-technology-to-throttle-twitters-traffic/

https://en.wikipedia.org/wiki/Internet_censorship_in_Russia#Deep_packet_inspection

seems to be the system/device in question.

> I believe they at least swallow/stop TCP SYN packets toward some
> destinations
> (or across a link generally), but I'm curious as to what steps the devices
> take,
> to be able to judge impact seen as either: "broken gear" or "funky TPSU
> doing it's thing"
>
> thanks!
> -chris
>
>
>> And the drills do not mean at all "we will turn off the Internet for all
>> the clients and see what happens", journalists trivialized it.
>> Most likely, they checked the autonomous functioning of specific
>> infrastructurally important networks connected to the Internet,
>> isolating only them.
>> It's not so bad idea in general, if someone find another significant bug
>> in common software, to be able to isolate important networks from the
>> internet at the click of a button and buy time for patching systems.
>>
>
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