To easy understand what i am saying, i will give you this example, you visit domain.com but on this page there are other things from external domains other than domain.com that firefox fetches/connects to - cdn.blabla.com; third-party.socialwebsites.com, etc. What i want, is to simply not connect to any other domain except what i typed in url bar. I understand it can break pages but i dont care.
A while ago, setting permission.default.images to 2 somehow worked and stopped loading of external content. Disabling prefetch/preconnect/predict/predictor does nothing.
p.s. i dont want to use extensions, only about config.
I think uMatrix extension does that? But the user interface might be a little bit unintuitive at first and you have to learn how to enable and disable specific domains. And you have to click the save button to make the settings permanent for that website. The cool thing is, you have detailed control which domain for each website and even what type they can access.
But that is not strict what you was asking. So if you really want strictly prohibit all domains and files from being accessed and loaded up by default, then you should look into other configuration or extension. I am not aware of such a configuration in Firefox itself.
Edit: Yes I know you don’t want to use an extension, but if Firefox itself does not provide it, that would be your best next thing.
uBlock in expert mode provides a similar interface. It’s not able too fine tune at the same level though.
I use uBlock Origin + uMatrix together. Didn’t know uBlock can do that. Need to look into the expert mode more.
Hey, in case you didn’t find or another user is interested, here is the wiki documentation part for the different blocking modes (easy, medium, hard).
https://github.com/gorhill/uBlock/wiki/Blocking-mode
an extension has access to eveything you visit. it tracks you and sells/shares your data. not to mention potential bad code injection.
Replace “an extension” with “a browser” and you can say the exact same thing. At some point you have to trust something and I have seen no evidence that uBlock Origin is doing anything nefarious so far.
Not every extension has access to everything. The things that it has access is listed. And if they are open source, then it can be audited that it does not collect data. The filter lists are local on your computer.
However I do understand the concern, it just does not apply to everything. But off course, it would be better if there is a builtin functionality. I am just not aware of something like that in Firefox itself. That’s why I suggested the best next thing.
i hoped there are some config values that i am unaware of to do the changes i want.
open source = some parts of the code can be open at best, it isnt what it sound. license matters. this word is just a trick.
yet, i wouldnt count on someone auditing code, there was lots of big projects with trully open code that had bad code injected for decades and noone noticed.
as much as i know, those extensions call back on developer server for updates/new filters etc. so i skip.
You don’t have to update the filter lists. You can have a totally local offline list that never updates, but you can add your own exceptions and filters. I mean you can do what you want, but I think there are some misconceptions. In example uMatrix is not spyware. It does not send unwanted information to developers back. And people audit not only the code, but also what is sent through network after installation.
If you really don’t trust much, which is understandable (i am not trying to convince you to install spyware), then I think Firefox is not the best browser for you. In that case it would be better to use a browser like LibreWolf, a fork of Firefox with configurations of privacy and security in mind. It comes with uBlock Origin plugin though, if that is a deal breaker.
Good luck finding a solution. I don’t know any way doing it in Firefox without addons.