Mirrors/uBlock
1
0
Fork 0
mirror of https://github.com/gorhill/uBlock.git synced 2024-11-16 15:33:38 +01:00
Code Issues Releases Wiki Activity

Updated Dynamic filtering: default deny (markdown)

Raymond Hill 2015-07-25 08:57:27 -04:00
parent be2c2252d5
commit f757ca6d7f
1 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
Dynamic-filtering:-default-deny.md

@ -2,13 +2,22 @@
***
Default-deny is an awesome blocking mode for whoever is ready for the task of having to un-break web sites during the first visit, and agrees that in general most 3rd-party resources from web pages:
Default-deny is an awesome blocking mode for whoever agrees that in general most 3rd-party resources from web pages:
- are not really _all_ required
- increase privacy exposure
![Default-deny](https://raw.githubusercontent.com/gorhill/uBlock/master/doc/img/df-dd-01.png)<br>
<sup>Default-deny engaged, through the default blocking of 3rd-party network requests.</sup>
Strictly speaking, default-deny means to block everything and let the user choose what should not be blocked. This strictest mode of default-deny is impractical though, as this means that most web pages would be broken, and more than likely most users would not make use if it.
With uBlock it is possible to use more relax (and thus practical) versions of default-deny: _3rd-party-deny_ (stricter), and _3rd-party active content-deny_ (for lack of better expression).
_3rd-party-deny_ will result in more remote resources being blocked, as anything which is 3rd-party to the current site will be blocked by default. This means a higher likelihood that web pages won't render or behave properly:
![Default-deny anything which is 3rd-party](https://cloud.githubusercontent.com/assets/585534/8889495/c0694db0-32aa-11e5-9c1d-919e89d80c4b.png)<br><sup>Default-deny all 3rd-party: more likely to break, this will need fixing by the user.</sup>
A more friendly approach is to use _3rd-party active content-deny_, which will block only 3rd-party active content, where _active content_ refers to script and frame resources. In such case the likelihood of page breakage is much lower the _3rd-party-deny_, and yet this is where most of the benefits are reaped:
![Default deny only 3rd-party scripts/frames](https://cloud.githubusercontent.com/assets/585534/8889496/c573989c-32aa-11e5-9a40-297ef60a58d0.png)<br><sup>Default-deny 3rd-party active content only: less breakage, yet most 3rd-party resources are blocked.</sup>
The 3rd-party status of a network request is determined as follow: if the domain of a network request does not match the domain of the web page from which it originates, the network request is deemed 3rd-party. The domain information is extracted as per the official [Public Suffix List](https://publicsuffix.org/).