cname-trackers VS FTL

Note that CNAMEs is literally caused by GDPR, and the pathway every single ad or tracking company seems to go sooner or later.

For people not understanding how it works: you can set a CNAME entry on your tracker.domain.tld to bypass all Browser's third-party tracking preventions, and make it look like it's a normal subdomain of your website.

You need to make a CNAME tracker database manually by resolving the reverse entries for known IPs. Usually there is hundreds or thousands of CNAME entries pointing to the same IP address.

The AdGuard team also made a database for this, in case anyone needs it for UBOL [1]

[1] https://github.com/AdguardTeam/cname-trackers

So nextdns’s third party disguised trackers is actually really tiny of a list, like 30 domains. (Im trying to add more so it has the same amount of cname’s blocked as adguard). Anyways, the reason why the list is so tiny is because it uses wildcard logic so all subdomains get blocked. It already uses some of the cname companies that adguards cname-tracker list uses but not all. Hopefully my pull request can get merge eventually because then the setting will be a little bit more effective

I see fathom on Adguard CNAME tracker. Example:

> uBlock Origin already performs CNAME decloaking and blocks this approach, it’s pretty cool.

... which in return is a static list of domains which needs to be regularly updated, and therefore is not really failsafe. uBlock0 uses Adguard's scraped dataset [1] as a source to do this, as Chrome Extensions cannot make DNS requests without a DNS-via-HTTPS endpoint.

[1] https://github.com/AdguardTeam/cname-trackers

Not sure where I should report this, but I seem to have found a CNAME cloaking tracker which i don't find in either the original or disguised tracker lists here https://github.com/AdguardTeam/cname-trackers Is there a mechanism for reporting these? I saw someone posted a list on github, but no response there. Maybe this example is just ordinary tracking though?

Are you able to block trackers/ads using this new CNAME cloaking technique? https://github.com/AdguardTeam/cname-trackers

It's actually the name of the Pi-hole DNS server (FTLDNS) - pihole-FTL: - https://docs.pi-hole.net/ftldns/ - https://github.com/pi-hole/FTL

FTL v5.23

[✓] Detected ARMv8 (or newer) processor [i] Checking for existing FTL binary... [i] Downloading and Installing FTL...curl: (28) Failed to connect to github.com port 443: Die Wartezeit für die Verbindung ist abgelaufen [✗] Downloading and Installing FTL Error: URL https://github.com/pi-hole/ftl/releases/latest/download/pihole-FTL-armv8-linux-gnueabihf not found [✗] FTL Engine not installed

You will need to install it manually. You can find older versions on github: https://github.com/pi-hole/FTL/releases

To fix this, the "Other" category was introduced on this pull request: https://github.com/pi-hole/FTL/pull/1284.

FTL v5.22

curl failed to verify the legitimacy of the server and therefore could not establish a secure connection to it. To learn more about this situation and how to fix it, please visit the web page mentioned above. [✗] Downloading and Installing FTL Error: URL https://github.com/pi-hole/ftl/releases/latest/download/pihole-FTL-linux-x86_64 not found [✗] FTL Engine not installed Unable to complete update, please contact Pi-hole Support

Error: URL https://github.com/pi-hole/ftl/releases/latest/download/pihole-FTL-armv7-linux-gnueabihf not found