this post was submitted on 16 Aug 2023
39 points (95.3% liked)

Selfhosted

40113 readers
838 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

  1. Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.

  2. No spam posting.

  3. Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.

  4. Don't duplicate the full text of your blog or github here. Just post the link for folks to click.

  5. Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).

  6. No trolling.

Resources:

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 1 year ago
MODERATORS
ruud@lemmy.world
Loki@lemmy.world
CannaVet@lemmy.world
HybridSarcasm@lemmy.world
devve@lemmy.world
HybridSarcasm@lemmy.hybridsarcasm.xyz
39
DNS hijacking (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by 3laws@lemmy.world to c/selfhosted@lemmy.world
35 comments fedilink hide all child comments
 

EDIT: So because of my $0 budget and the fact that my uptime is around 50% (PC, no additional servers) I ended up using NextDNS. For the time being it works (according to dnsleaktest), an added benefit was improved ad-blocking (100% in this tool). I now have plans for a proper router in the future with a Pi-hole. Thanks so much for all the info & suggestions, definitely learnt a lot.

So it turns out I got myself into an ISP that was shittier than expected (I already knew it was kinda shitty), they DNS hijack for whatever reason and I can't manually set my own DNS on my router or even my devices.

Cyber security has never been my forte but I'm always trying to keep learning as I go. I've read that common solutions involve using a different port (54) or getting a different modem/router or just adding a router.

Are they all true? Whats the cheapest, easiest way of dealing with all of this?

you are viewing a single comment's thread
view the rest of the comments
[–] 3laws@lemmy.world 2 points 1 year ago (2 children)

Why can you not set your own DNS on your devices?

I can, they get redirected to my ISPs DNS, no matter what. This was not an issue with my pervious company.

[–] neuromancer@lemmy.world 6 points 1 year ago* (last edited 1 year ago)

You can use DNS over HTTPS or TLS with Quad9 https://www.quad9.net/service/service-addresses-and-features

If you are using PiHole just use that as the forward DNS.

[–] greenashura@sh.itjust.works 2 points 1 year ago (1 children)

How are you detecting this? Just curiosity

[–] dan@upvote.au 6 points 1 year ago* (last edited 1 year ago) (1 children)

Often, if you try to go to a non-existent domain, it'll still return an IP address that loads a "this site doesn't exist" page hosted by the ISP, often full of sponsored links, similar to a domain parking page.

It's trivial to do this. DNS requests are unencrypted and can easily be modified by an ISP, even if you use a custom DNS server like Google's 8.8.8.8 or Cloudflare's 1.1.1.1. You need DNS over HTTPS or a similar technology to prevent this happening.

[–] ares35@kbin.social 1 points 1 year ago

hijacking dns is also my provider's first action when you're late paying the bill. by ip or doh or a long-lived dns cache and you're still going, but anything looked-up via a 'regular' dns server goes nowhere. that gets you another 2-3 weeks until they deny the modem from even authenticating.