this post was submitted on 03 Oct 2023
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241
Firefox rolls out ECH enabled by default in 118 (blog.mozilla.org)
submitted 1 year ago by [email protected] to c/[email protected]
18 comments fedilink hide all child comments
 

ECH (encrypted client hello) is going or get enabled by default (already existed in a hidden setting) with version 118.

This page about the version explains a bit better ECH https://support.mozilla.org/fr/kb/understand-encrypted-client-hello

Tho it is still a bit confusing.

From what I understand there is the DNS query > the dns servers sends back an IP. This DNS query can be encrypted with DoH (or DoT?, it seems only DoH from the post).

Then there is a handshake with the website where the website informations can be leaked, and that can be encrypted by ECH (if the website supports it).

Then after that there is a tls connexion established between the website and the user.

The part where I'm confused is : can ECH be used without DoH? If yes that would mean that I can use a DoH capable software and not have to configure it into Firefox? (ex: Nextdns + yogadns)

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[โ€“] [email protected] 2 points 1 year ago (1 children)

TIL about cloudflared being a DoH proxy. Nice, will be looking into this later...

[โ€“] [email protected] 1 points 1 year ago

It works well, and it's easy to set up. Previously I had used dnscrypt-proxy since it supports DoH as well.