Firefox is one of the best browsers for blocking ads and crappy web trackers, and it’s possible for you to make it even better using nuke-em-all online window extensions likeuBlock Origin.

Now,Ghacksand GitHub users point out that uBlock Origins is even capable of blocking new types of ads, trackers, and website content that browsers like Chrome cant (or wont), even with the add-on installed.

This special content uses canonical name (CNAME) records to get through content blockers by telling the web app the content being displayed is important first-party content that needs to be displayed on a website.

Thats not the case if youre using uBlock Origin on Firefox, which is testing out a method for blocking this annoying workaround, tooadding yetanother point in the browsers favor over its competition.

uBlock Origins expanded CNAME blocking capabilities for Firefox arein beta right now, but will soon be available in Firefox once the add-ons version 1.24.1 drops.

Whether you grab the beta version now or wait for the next stable update to roll around, users will have to grant a new permission for uBlock Origin to Access IP address and hostname information.

After that, youll need to tweak some of the add-ons parameters to enable advanced ad-blocking:

Typeabout:addonsinto the Firefox URL bar and press enter to initiate the extension parameters

tap the…icon next to uBlock Origins then clickOptions

Check theI am an advanced userbox then click thegear-shaped iconthat appears next to it

In the next window, findcnameAliasListfrom the list, and change the parameters value to *

ClickApply Changes,and then wrap up the options.

You may need to restart Firefox

After these tweaks have been changed, uBlock Origins will be able to filter out those pesky ads and trackers using CNAME records.