Can uBlock Origin Block WebRTC?

3 points by justusw 14 days ago · 3 comments

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its-summertime 14 days ago

No it can't, but yes it can, just not like that.

https://github.com/gorhill/uBlock/wiki/Resources-Library#now...

As can be seen, it matches on the source, not the destination

https://github.com/gorhill/uBlock/wiki/Resources-Library#web...

can match on the destination, however.

Its not a good state of things, but I'm assuming its more of an issue on the browser side as opposed to the extension side

justuswOP 14 days ago
Thanks for the reference links. I blocked RTC connections initiated on the SBI Shinsei banking log in page at bk.web.sbishinseibank.co.jp with the following custom uBlock Origin filter:
```
    bk.web.sbishinseibank.co.jp##+js(nowebrtc)
```
You can see that it works because typing `new window.RTCPeerConnection()` in the browser console prints this:
```
     Document tried to create an RTCPeerConnection:  undefined
```
Which comes from uBlock, see https://github.com/gorhill/uBlock/blob/5efb8ee4891c09720011e...
Edit: I gave a shout-out to your comment on the blog post linked in this submission. Thanks again.

justuswOP 14 days ago

Perhaps someone here knows how to make uBlock Origin block STUN/TURN connection attempts to domain names that are in its block list?