Custom "Domain name not resolved" web page

[DavidOsipov]

Hello, guys!
Do you think it is a good idea to show a custom web page like "This domain is blocked because ... You're secured by Adguard Home" instead of boring "Domain name not resolved"? I think it's convenient to know that Adguard home has blocked a domain and why + moreover additional brand awareness. And I think this feature is quite easy to implement.

[ainar-g]

Hello. From what I can tell, this is the current way to do it.

[ameshkov]

Guys, you can achieve this by choosing "Custom IP" blocking mode: https://uploads.adguard.com/up04_AdGuard_Home_31o9z.png

The whole problem with adding this functionality to AGH is that it requires generating&installing an HTTPS cert (otherwise you'll see a TLS error with no option to proceed).

Instead of that, I'd prefer to wait until the browsers start displaying "Extended DNS errors" information: https://tools.ietf.org/html/rfc8914

Also, there's a chance that we'll get an ideal solution with "DNS Access Denied Error Page": https://datatracker.ietf.org/doc/draft-reddy-dnsop-error-page/

[DavidOsipov]

Is it really a problem, because AGH currently supports HTTPS out of the box? LetsEncrypt certs are no problem for administrators. What if instead of Custom IP we can insert a Custom CNAME, which is to redirect from blocked domain to Adguard Custom Block page?

[ameshkov]

@DavidOsipov

What if instead of Custom IP we can insert a Custom CNAME, which is to redirect from blocked domain to Adguard Custom Block page?

Well, it will anyway be converted to an IP and you'll still see an HTTPS error there because of the wrong certificate that does not match the blocked domain.

[eddydc]

I'm rather confused by the above. Is there a way to have a blocking/landing page when a blocked domain is retrieved or is it impossible?

[ameshkov]

@ainar-g we probably should expand this FAQ answer and explain how to configure a custom blocking page: https://github.com/AdguardTeam/AdGuardHome/wiki/FAQ#pixelsrv