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DPI filtering and 443 blocked


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#1 Anontor

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Posted 27 August 2012 - 08:29 PM

Would AirVPN work where tor and VPN proxies are banned using DPI ?

"On June 26th, 2012 Anonymous said:
oh.. lucky those who can make a connections on other
country, bad luck here on thousands filipino's here in the philippines
who's relying on tor...
recently 2 of the biggest ISP's blocked Tor
If I;m not mistaken through port 443.. .
even vpn are all blocked.. .
status now here is in back to zero.. .
we' in our community join together in the fights against censorship..
net cost here are so expensive &
I guess in your country the speed that gives to us by the ISP's is just a free..
but in a long run .. failure!"

https://blog.torproject.org/blog/update-censorship-ethiopia#comments

#2 Staff

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Posted 27 August 2012 - 08:52 PM

Would AirVPN work where tor and VPN proxies are banned using DPI ?

"On June 26th, 2012 Anonymous said:
oh.. lucky those who can make a connections on other
country, bad luck here on thousands filipino's here in the philippines
who's relying on tor...
recently 2 of the biggest ISP's blocked Tor
If I;m not mistaken through port 443.. .
even vpn are all blocked.. .
status now here is in back to zero.. .
we' in our community join together in the fights against censorship..
net cost here are so expensive &
I guess in your country the speed that gives to us by the ISP's is just a free..
but in a long run .. failure!"

https://blog.torproject.org/blog/update-censorship-ethiopia#comments



Hello!

OpenVPN handshake has a typical fingerprint, easily identifiable with DPI (it does not look like real SSL). We are preparing a system to mitigate this problem, stay tuned in the next weeks.

Currently you have some systems (with Air) to evade a lot of controls: connecting to port 53 UDP (all Air OpenVPN servers accept connection on 53 UDP), or (in countries/ISPs which do not block TOR) connecting Air over TOR.

Another system is connecting Air over any public socks or http proxy which is not blocked, this system is currently quite effective.

Kind regards

#3 maniazer

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Posted 27 February 2013 - 10:31 PM

Hello,

Have you any news relating to your new system ? At the moment, your system is not DPI-Proof.

System DPI-Proof offer a coding of the communications relating to layers 4 to 7 of OSI model . Thus to return rises and blind men these systems of interceptions massive.


Concretely, what system protects me from the DPI ?

Thank's

#4 Staff

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Posted 27 February 2013 - 10:38 PM

Hello,

Have you any news relating to your new system ? At the moment, your system is not DPI-Proof.

System DPI-Proof offer a coding of the communications relating to layers 4 to 7 of OSI model . Thus to return rises and blind men these systems of interceptions massive.


Concretely, what system protects me from the DPI ?

Thank's



Hello!

OpenVPN, offering (besides other features) exactly what you define a coding on layers 4-7, does protect you against DPI.

DPI can only understand that you're using OpenVPN, nothing else. In order to prevent even that, we'll be launching OpenVPN over SSL and over SSH in the next weeks, so that DPI will identify your traffic as "SSL" or "SSH", not OpenVPN.

Kind regards

#5 Baraka

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Posted 28 February 2013 - 10:13 AM

bad luck here on thousands filipino's here in the philippines
who's relying on tor...



Thank you for sharing this story with us. This is why Air's service is so vital to so many around the world. What was described is an absolutely horrifying, totalitarian experience which illustrates how governments are often the greatest proponents of censorship and terror.

#6 mohdfadhlan

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Posted 20 August 2015 - 10:24 AM

Any latest update for DPI technology that can prevent AirVPN while using S-tunnel? As far as I know, there is no yet.


-Paklan-






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