Hello
Can I use for example ProtonVPN but add in Firefox settings DNS server with ad block?
As I know, it is not system level DNS, so it should be routed through VPN too. Correct me if I am wrong.
VPN - standalone ProtonVPN Linux app, not extention.
It best to use an adblocker like uBlock Origin and a VPN with its own DNS. I do not suggest if you’re a beginner mess with custom DNS.
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ProtonVPN offers its own add blocking DNS options which will be both more private than a third party DNS provider and probably a lot easier to implement.
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I know, but it is paid 
I am on free account…
Thanks! Went with Ubo and plain Proton VPN on my laptop (Pop Os)n
I think about adding ad-block DNS to my android phone too (in phone settings) to block ads in apps. Is it OK?
Because after adding dns.adguard.com in settings->connections->more->private DNS ads in Viber disappeared
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Its not a fool proof solution and may not always work. YOu can try and see if it works for you based on the apps you have. Just perform DNS leak test to make sure all is okay.
You should choose either a separate DNS or a VPN (which automatically enables DNS). Combining these two services will not improve privacy. It’s best to install adware on a separate phone.
The thing is I wanna hide my activity from ISP (I don’t trust it at all since they directly say that they “may log activity for 30 days”).
DNS needed to block ads.
On other forum I got recommended to install Firefox on phone (just like I did on laptop) and go with UBo. Anyone did that?
I use Firefox on my Android with uBO and it works great, I also have AdGuards DNS to block ads in other apps.
Either way, I think that on Android specifically brave is a better option. Their built in adlobcker is pretty nice and its performance is way better than Firefox, On a PC that dosent really matter tbh.
I only use Firefox on my phone because i make use of more extensions other than ublock.
To give a more detailed explanation, using only Custom DNS works best when you are worried about malicious extensions and don’t want to use them at all. Obviously, uBO has been reliable for some time, but a lot of folks are worried about how any given extension has intrusive access to your browser. There has been documented attacks where extensions have been used to spread malware.
For your usage case, don’t bother with custom DNS if you’re just going to put it in Firefox. uBO is far more superior in everyday use and can help block harmful scripts in the websites you browse.
If you’re using…lets say…Vanadium in Graphene OS or Trilavent in Fedora SecureBlue, you should set up a device-wide or router custom DNS filter to work in tandem with the included ad blocker. Mullvad offers a free one but you can explore other configurations as well.
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Maybe. But there is no extension support. Plus after that whole manifest v3 shit I ignore everything based on chromium (it is not privacy concern, just boycott of manifest v3)
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It’s odd that PG’s DNS overview has not been linked yet.
Just curious, what extensions do you use/need for your mobile browser?
Dark reader comes to mind for me
It is also inaccurate in some places. For instance, a large part of the introduction assumes DNS is merely translating domain names to IP addresses.
And for some reason, calls DNS-over-TLS a “complex protocol”.
Prefer VPN provider’s DNS resolver; ref this recent discussion:
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UBo? No-script. And more importantly Sponsorblock
I find brave sufficient for adblocking, so uBO + firefox is unneeded IMO. What’s the use was for noscript? If it’s for blocking all scripts, you can achieve that with Brave. If it’s for granular control, then I suppose it’s necessary, since brave android is lacking on that front. As for sponsorblock, there’s a few front-ends for YouTube that have SponsorBlock built in. I would recommend those over the extension.