Red Bridge CyberRed Bridge Cyber
Customer Login
What We CheckHow It WorksFree CheckPricingResearchAboutBlogCustomer Login

What are QUIC and HTTP/3?

HTTP/3 is the current version of the web protocol, and QUIC is the transport it runs on. Both are already in use without most site owners noticing:

  • It moves off TCP onto UDP - which removes a round trip and copes better with unreliable mobile networks.
  • Encryption is built in - there is no unencrypted HTTP/3.
  • Your CDN or host enables it - it is a server capability, not something you configure per site.
  • Firewalls occasionally block it - some middleboxes drop the UDP traffic and clients fall back to HTTP/2.

Nothing to do here for most businesses beyond choosing a host that supports it.