How does Yota block Mtproto proxy?

Question

Yota

I made my mtproto proxy on a vps in france. Telegram connects to it, but it takes a very long time to load photos
. It works fine on the same server via socks5. After reading the
Internet, I found that yota has been somehow reducing mtproto speed to very low values ​​since August, although the protocol was created specifically to bypass dpi.
Is it possible to somehow bypass this by setting the server or is it a protocol flaw?
After all, socks5 is easily detected and can be blocked when the screws are tightened again.

Answer 1

Found a solution to this problem!
You just need to put mtproto proxy on port 1194 or port 51820.
The problem was that yota saw that the traffic is encrypted and is something incomprehensible (this is protection from some vpn and torrents, apparently) and reduced the speed to almost zero. And on port 1194, it does not watch traffic, because it has almost all vpn.

Answer 2

probably this will help:
https://juick.com/schors/2933433

Hiding traffic. MTProxy has the ability to mix random data into the traffic to make it harder to identify characteristic protocol patterns. All listed servers support this feature. To enable it, you need to add two characters on the client to the key by which you go to the proxy server - “dd”. It is on the client, on the server, that the key remains as it was. Some servers support "dd mode only". This does not give 100% protection, but complicates the work of detection. I insist that dd-keys be used.

Answer 3

Here you can read. Starting with the words:
https://habr.com/en/post/437024/

Answer 4

Presumably this is due to the specific packet size used by telegram
https://habr.com/en/post/414099/