ProtonVPN, add VPN traffic obfuscation, like a ScrambleSuit
As internet censorship tightens across the world, governments are becoming more and more concerned about preventing the use of VPN to circumvent their restrictions.
A new internet traffic monitoring technology known as Deep Packet Inspection (DPI) has been proven to successfully block OpenVPN traffic regardless of the port used being 80, 443 or even 53. To sum up: everyone who uses the internet needs to be aware of Deep Packet Inspection. DPI is a next-generation technology capable of inspecting every byte of every traffic packet that passes through a DPI device, that means packet headers, types of applications and actual packet content in real time which were previously impossible to do using advanced proxies, or stateful firewalls systems.
Using ScrambleSuit method, many users on networks using DPI have been able to bypass it. The method works in most cases because the OpenVPN traffic which is obfuscated can't be recognized by DPI.
Tez
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Bliss
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VyprVPN offers Chameleon Protocol which can bypass the DPI (Deep Packet Analysis) used by ISPs and service providers.
"VyprVPN's engineers have developed a remarkable new, proprietary VPN technology called Chameleon. Chameleon scrambles OpenVPN packet metadata to ensure it’s not recognizable via deep packet inspection (DPI), while still keeping it fast and lightweight. The Chameleon technology uses the unmodified OpenVPN 256-bit protocol for the underlying data encryption."
It will be good to see if ProtonVPN can develop something similar without spending too much time and resources. I am sure it can be easily be achieved since VyprVPN has already done it...