QUIC

End-to-End Encryption: A Privacy Victory or a Networking Blind Spot?

The CellStream Blog / By

Views: 854TLS 1.3, QUIC, HTTP/3, encrypted DNS, and Encrypted Client Hello increasingly conceal application and transport information that network operators traditionally used for troubleshooting, security inspection, filtering, performance optimization, and policy enforcement. Here is a little reference chart: This produces two defensible but conflicting positions: For most of the Internet’s history, and certainly for my

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CSI-HO-020-M – Wireshark QUIC Analysis in a Day – 1 Day

Exploring Packet Analysis Courses / By

Views: 14,7271-Day Instructor-Led Hands-On Lab CourseAvailable through Web-Based Live Delivery or On-Site DeliveryMinimum 8 Students – Maximum 16 Students What Students are saying about this class Course Description QUIC has changed the way modern Internet applications transport data. Unlike traditional TCP-based application transport, QUIC operates over UDP, integrates strong security, supports multiple streams within a

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Does Windows support TCP CUBIC?

Frequently Asked Questions / By

Views: 2,419This question was sent to me in an email following my posts on regarding TCP CUBIC. The answer is Yes—Microsoft Windows does support TCP CUBIC, but the nuance is in how and when it’s used. For many years, Windows defaulted to Compound TCP (CTCP) rather than CUBIC. Meanwhile, Linux distributions standardized on TCP CUBIC,

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Mapping ABR to TCP Congestion Control and QUIC

The CellStream Blog / By

Views: 1,672I described what Adaptive Bit Rate Streaming (ABR) is in my prior article, if you need that background. Also there is an ABR Lab Exercise if you want some hands on learning with ABR that will show you visually some of the items discussed below. Here, I wanted to dive a little deeper into

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MPLS – The Most Secure without Encryption

The CellStream Blog / By

Views: 2,993Let’s just start right out and say: contrary to the scare tactics made by some, that MPLS traffic has been exposed by the providers that operate MPLS, there has never been any validated evidence that such a breach has indeed ever occurred, other than some alleged errors in configuration. MPLS operates between L2 and

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An update on QUIC Adoption and traffic levels

Frequently Asked Questions / By

Views: 16,764Back in 2018 (I think) I was becoming increasingly aware of the QUIC protocol in my and other’s packet captures and I immediately dug in and wrote about it. As of recent data (now Feb 2025), QUIC (Quick UDP Internet Connections) is experiencing significant adoption across the internet. Websites have implemented QUIC, with HTTP/3—built

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CSI-TB-007 – QUIC Redefines the Transport Layer – A Technical Overview/Briefing

Technology Overviews/Briefings / By

Views: 12,3331 Day Instructor Led Technology Overview/Briefing Available in either Web Based Delivery or On-Site DeliveryWeb Based Delivery: Max class size is 50On Site Delivery: Max class size is 30 Course Description: Google introduced one of the most significant changes to the Layered Model of telecommunications when it introduced QUIC (see our articles here, and

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How To Observe if the Web Site you are Browsing Uses QUIC

Networking and Computing Tips and Tricks / By

Views: 2,538We started to notice QUIC back in 2017.  For an overview of QUIC you can see my article here: https://www.cellstream.com/2018/03/07/is-there-a-lot-of-quic-in-your-packet-captures/ How do you know if a given web site uses QUIC/gQUIC?  It is a great question, and can be easily answered if you are using Google Chrome (which, by now you should be!). First,

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Is there a lot of QUIC in your Packet Captures?

Networking and Computing Tips and Tricks / By

Views: 2,453Have you noticed a lot of QUIC protocol in your packet captures?  I certainly have, and we had better talk about what this is.  What is QUIC (now more recently called gQUIC)? QUIC is a new protocol created by the fine folks at Google.  It stands for Google Quick UDP Internet Connections.  It is

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