Why is your proxy leaking: Solution XProxy to your problems with HTTP/3 , QUIC and UDP Proxy

1. Proxies will die in 2023?

There's a lot of talk on Blackhatworld.com about proxies will die in 2023 because of QUIC and HTTP3.

Why you BANNED on Google/Facebook Ads OR YOUR PROXY HAS DIED

beatzcash777 - BlackHatWorld

Proxies will die in 2023?

Someone - BlackHatWorld

Proxies are dying for Instagram / Facebook

immensity - BlackHatWorld

Not only Facebook, Google are using HTTP3, QUIC, but other platforms such as Twitter, Microsoft, Bing, Instagram are also starting to use HTTP3, QUIC to detect the exact IP address of the client. Ref: https://en.wikipedia.org/wiki/HTTP/3

If you are using a proxy for an important account and one day your account is restricted, it's time to learn more about HTTP3, QUIC and review a proxy provider that complies these new standards.

XProxy is particularly proud to be the first proxy developer to support QUIC and HTTP3.

2. What is QUIC? What is HTTP3?

HTTP/3 is the third major version of the HTTP network protocol used by the World Wide Web. It was developed from the QUIC protocol, which was initially developed by Google and later became an IETF standard.

Protocol Stack of HTTP/3 compared to HTTP/1.1 and HTTP/2

Like HTTP/2, HTTP/3 is based on an upgraded version of the TCP protocol. It also adds support for multiplexing requests and responses on the same connection, as well as support for request prioritization.

HTTP/3 has been designed to be more efficient than HTTP/2 and HTTP/1, with lower latency and reduced network usage. However, it is not yet widely supported by browsers and servers.

how QUIC and HTTP3 Protocol work

Overall, HTTP/3 is an exciting new development in the evolution of the World Wide Web, and we look forward to seeing it widely adopted in the future.

QUIC is Quick UDP Internet Connections. QUIC developed by Google, aims to improve UDP for speed and security. The QUIC protocol can help servers identify the real IP address of a client, even if the client is using a proxy. This is a strong point of QUIC concerning connection management and security.

Performace of QUIC and HTTP3 protocol

The QUIC protocol allows servers to identify the real IP address of a client through the "CID" (Connection ID) field in the QUIC packet. The CID field contains information about the client's IP address and helps the server determine the request's origin. Based on the CID field, the server can know the real IP address of the client, regardless of whether the client is using a proxy.

Performace of QUIC and HTTP3 protocol

In the case of a client using a proxy, the proxy acts as an intermediary forwarding requests from the client to the server. However, through the CID field, the server can still identify the real IP address of the client without being affected by the proxy's IP address.

Additionally, QUIC integrates TLS (Transport Layer Security) to ensure data security during transmission. TLS provides authentication and client validation mechanisms, helping determine whether the client has access rights and linking IP address information to client authentication.

OSI model for HTTP/2 and HTTP/3 QUIC

Because of these security improvements, QUIC has become an efficient and secure transport protocol for data transmission over the Internet. Implementing security at the same transport layer as data helps reduce latency and increase transmission speed compared to deploying encryption at the application layer as in the HTTPS protocol.

3. XProxy's Solution to Avoid Detection when Websites Request HTTP3 and QUIC

In the context of QUIC and HTTP/3, spoofing the client's IP address through a proxy server encounters several challenges, including:

  1. Data Encryption: QUIC uses encryption to secure data between the client and the server. This makes IP address spoofing more challenging, as the proxy server needs to decrypt and encrypt data while changing the IP address without compromising data integrity.
  2. Client Authentication: QUIC uses TLS to authenticate the client and ensure data integrity. The proxy server needs to authenticate like a genuine client to spoof the client's IP address validly.
  3. Connection ID (CID): QUIC uses the CID field to determine the request's origin. The proxy server needs to modify the CID field accurately to spoof the client's IP address.

All these changes are at Layer 4 of the OSI model. Therefore, IP address spoofing in QUIC and HTTP/3 requires the proxy server to access and process data at the protocol and encryption levels of Layer 4.

XProxy UDP proxy OSI model how work

XProxy's development team has successfully tackled these challenges and has taken full control of modifying the client's IP address through QUIC. Not only that, XProxy also intervenes in Layer 3 and Layer 7 of the OSI model to ensure complete anonymity for the client and matching information with mobile proxies.

The focus of this article is on QUIC and HTTP3. If you want to learn more about UDP Proxy and how to use its effective, you can explore this separate article: Take Control of Your Privacy: The Power of XProxy's VPN Feature and High-Quality UDP Proxy

4. Showcases: How to use UDP Proxy of XProxy to bypass QUIC, HTTP/3

In this section, I will present 3 showcases, comprising:

  1. Showcase 1: Access Instagram without proxy.
  2. Showcase 2: Access Instragram using SOCKS5 proxies and FoxyProxy.
  3. Showcase 3: Access Instragram using UDP Proxy of XProxy.

Through 3 showcases will help you better understand how HTTP/3 and QUIC works. In showcase #3, I will detail step-by-step instructions to use UDP proxy generated from XProxy. And how effective is UDP proxy when working with QUIC, HTTP/3.

Showcase 1: Access Instagram without proxy

In this showcase, we will access Instagram without proxy, directly via physical network, and check how HTTP/3 and QUIC detect our client.

Here is screenshot of Instagram without proxy and there are total 45 requests.

Instagram without proxy, directly via physical network

Still on first page of Instagram without proxy, we set a filter that only shows the protocol as HTTP/3. Go to security tab of any request to check which TLS version.

Instagram without proxy and HTTP/3 QUIC working

There are 18 requests of HTTP/3 and both of them are TLS v1.3. We can now be sure that, when you access Instagram directly, without using a proxy, you are connecting by the HTTP/3 protocol, which includes both the QUIC and TLS v1.3 standards.

Showcase 2: Access Instragram using SOCKS5 proxies and FoxyProxy

In this showcase, we will access Instagram using SOCKS5 proxies and FoxyProxy Firefox. This is a common proxy usage that people still use. If you are using anti detect tools, you can apply this method to check the HTTP/3 and QUIC are working or not.

Setup SOCKS5 proxy to FoxyProxy of Firefox and turn on your Firefox using this profile.

Setup socks5 proxy of XProxy to FoxyProxy of Firefox

Access Instagram and check for how HTTP/3 requests?

Instagram with socks5 proxy and FoxyProxy, only HTTP/2 and TLS v1.3

Filter only protocol HTTP/3:

Instagram with socks5 proxy and FoxyProxy, no HTTP/3

There were 44 requests in total, and there weren't any HTTP3 requests. Tried some HTTP/2 requests and saw that HTTP/2 is using TLS v1.3.

This shows that when you use the SOCKS5 proxy at the application layer, HTTP/3 and QUIC won't work. And this is one reason why the platform thinks you're using a proxy or anonymizing your real information.

Showcase 3: Access Instragram using UDP Proxy of XProxy

Above all else, UDP proxies must operate at OSI layer 4. Accordingly, you'll need an application that can interfere with OSI layer 4. In this showcase, I will show you how to use ProxyCap and XProxy's UDP proxy with ProxyCap.

Install ProxyCap and setup Proxy server. Fill in UDP proxy of XProxy at port 5001.

Setup UDP Proxy of XProxy to ProxyCap

Setup Routing Rule:

  • Action tab: Choose Redirect through proxy, Choose UDP Proxy Server of XProxy which just created above step, Check Resolve names remotely.
  • Setup action of rule of proxycap and choose UDP proxy of XProxy
  • Programs tab: Choose This rule applies to all programs.
  • Transports & Ports tab: Check both of TCP and UDP, Choose This rule applies to all destination ports.
  • Setup UDP, TCP of Proxycap via UDP proxy of XProxy
  • IP Addresses tab: Choose This rule applies to all destination IP addresses.
  • Hostnames tab: Choose This rule applies to all destination hostnames.

Enable ProxyCap and UDP Proxy ready.

Enable ProxyCap and UDP Proxy ready

Now access Instagram via ProxyCap and check what's happen of HTTP3, QUIC.

Setup UDP, TCP of Proxycap via UDP proxy of XProxy

Filter only protocol HTTP/3:

Setup UDP, TCP of Proxycap via UDP proxy of XProxy

In showcase #3, there are 44 requests in total and 17 requests are HTTP/3. Compare with showcase #2, there aren't any HTTP/3 requests at all; and compare with showcase #1 which has 18/45 HTTP/3 requests.

Finally, UDP Proxy of XProxy and ProxyCap bypasses HTTP/3 and TLS v1.3 standards of QUIC.

5. Conclusion

If you're using a proxy to access Facebook, Instagram, Google, Microsoft, and one day your accounts get restricted, banned, or blocked, it's crucial to investigate whether your proxy supports HTTP3 and QUIC.

XProxy's proxy server system not only guarantees quality but also excellent customer service. Our experienced programming team is here to support you, ensuring your proxy is always top-notch.

XProxy Kit

To simplify the challenges associated with creating mobile proxies and advanced security features like HTTP3, QUIC, UDP Proxy, consider XProxy Kit. This all-in-one solution offers a user-friendly "Plug and Play" experience, eliminating the need for extensive technical knowledge. With XProxy Kit, you receive a comprehensive package that includes hardware components and a pre-installed free lifetime license. Simply prepare your SIM cards, and you're ready to embark on your digital marketing journey. All of this comes at an affordable price of $399, ensuring cost-effectiveness without compromising on functionality and efficiency.

XProxy KIT 5

All features of XProxy listed here.

If you have not time to researching and implemeting, we are offering FREE Mobile Proxy license software for 5 dongles. You can Getting Started free mobile setup here. It will out of offering soon, hurry up and starting today!

If you found this information helpful, we invite you to stay connected with us on our Telegram Channel for more updates and valuable content.

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