Questions tagged [dpi]

Deep packet inspection

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Can I2P traffic be identified?

If one is using Tor, the network administrator or ISP will be able to know that one is using Tor (reference). What about for I2P? If one uses I2P, can the network administrator find out that one is ...
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1answer
58 views

What kinds of web applications need dynamic packet filtering or deep packet inspection

I have some customers requesting that we put apply DPI or dynamic packet filtering in front of our web server. For the simplicity of my service, I'm feeling like this is over kill. What kinds of web ...
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1answer
133 views

Surveillance by mobile network provider

I am customer of Vodafone Germany as my mobile network provider. After extension of my RED S mobile contract i realized, that the option "Vodafone Secure Net" is enforced by the company without ...
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1answer
888 views

Using VPN and hidding this fact from ISP.

My ISP blocked a bunch of networks I need to access. I installed VPS (unix box) outside of my ISP's network and I now can build VPN between my home router and VPS, but I want to hide this fact from my ...
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3answers
265 views

How does a NG Firewall do application visibility and classification of TLS traffic without TLS interception and how reliable is this

How Does Application Visibility and Control Work? The application identification (App ID) classification engine and application signature pattern-matching engine operate at Layer 7 and inspect ...
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1answer
71 views

Identifying URL in SSL

http://qosmos.com/products/protocol-support/ state they are able to identify "Video, URL, date, duration, frame rate, +30 other metadata" for Youtube traffic. Duration, Frame Rate and date seems ...
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1answer
312 views

can HPKP certificate pinning disable DPI inspection on firewall?

Is it possible that Firefox and Chrome disable pin validation for users who imported custom root certificates all pinning violations are ignored. What is impact of that? Will browser report any ...
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1answer
669 views

VPN, ISP & deep packet inspection

If I use OpenVPN on port 443 (TCP or UDP), is it possible for my ISP with deep packet inspection to find out VPN usage? If so, what is the alternative?
2
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1answer
685 views

Socket closed depending on data. Am I facing an active firewall? (DPI - Deep Packet Inspection)

Following my troubleshooting of making a TLS connection (See: Testing TLS with openssl), it looks like there might be an active firewall in place. The connection on that port works with nc on both ...
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1answer
634 views

Can IPsec transport mode prevent DPI by your ISP?

It is well known that ISPs use deep packet inspection to deprioritize certain types of network traffic, such as that belonging to filesharing applications. If ISPs achieve this throttling of traffic ...