tox1c90

DNS over HTTPS

Recommended Posts

Hi!

I have a question regarding surf protection. From as far as I understood, it intercepts DNS requests using a WFP driver.

What happens if I enable the DNS-over-HTTPS features of Firefox or Chrome (via flag) and how does it influence the capabilities of surf protection? Wouldn't making secure DNS requests "tunnel" Emsisofts WFP driver because it doesn't do any man-in-the-middle attack to look into encrypted traffic?

However, I already tried out DNS-over-HTTPS using Cloudflare DNS and their status page indeed confirmed that I was using DoH. But when I tried surfing "phishingtest.emsisoft.com", EAM instantly blocked the connection.

So obviously DoH does not bypass EAM, but then my question would be: How is that possible? How does Emsisoft know that the browser wants to resolve "phishingtest.emsisoft.com" when the browser is sending an encrypted DNS request via HTTPS to Cloudflare?

Share this post


Link to post
Share on other sites

Surf Protection does appear to work fine with DoH turned on in Firefox, however I'm not familiar enough with the specifics of how Firefox's DoH support works to be able to explain why it doesn't prevent our Surf Protection from working.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.