[swinog] Re: Swisscom DNS issue: spectrum-conference.org wrongfully resolves to a bluewin address in swisscom mobile networks

2024-04-23 Diskussionsfäden Samuel B. via swinog
Public DNS Providers could possibly abuse their position and see what users of 
it are doing on the internet. It‘s different though, because a public dns 
provider cannot see who the user is exactly, they could take a good guess at 
it, but it‘s not always certain. ISPs (atleast swiss providers) have logs of 
IPs to Customer. This would allow the ISP to see exactly what customer XYZ is 
doing on the internet. Even if it‘s not permitted by privacy laws, what stops 
the provider from accessing it? Public Providers could do the same, but they 
most definitely do not know the exact name, address and other details about the 
customer, as the ISP can.
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[swinog] Re: Swisscom DNS issue: spectrum-conference.org wrongfully resolves to a bluewin address in swisscom mobile networks

2024-04-23 Diskussionsfäden Samuel B. via swinog
That‘s the legal aspect of things. That is of course totally normal. Every ISP 
has to follow that. Blocking other sites at your own will, just like swisscom 
is doing here, is not. 

Having users that simply do not wish to be blocked by your blocking service for 
„gambling”, or those that simply do not trust your DNS servers should still be 
free to use public DNS servers.

That still does not answer why you as an ISP try to convince your customers to 
not use Public DNS Servers, or „not seeing a reason“ in them doing so.
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[swinog] Re: Swisscom DNS issue: spectrum-conference.org wrongfully resolves to a bluewin address in swisscom mobile networks

2024-04-23 Diskussionsfäden Samuel B. via swinog
I find your last statement very ironic. 

There are valid reasons for using a different server than the ISP provided 
ones. Whether it‘s latency, as mentioned before deciding who gets to have 
access to the „valuable personal information“ or simply distrusting the ISP, as 
any ISP could „unintentionally“ or intentionally do the same as Swisscom has 
done here. That wouldn‘t colide with privacy laws in any way.

ISP XYZ could say; Well that Website is „dangerous for our users“, let‘s send 
it to our blackhole / blocking „service“!

-> And then the ISP wonders why users are switching DNS Servers?

Matter of fact! That‘s what it looks like IMP is also (atleast attempting to 
be) doing. (blocklist.imp.ch)

This is the exact same behaviour as Swisscom in this case. 

Getting back on topic, there are many valid reasons. The provider in this case 
shouldn‘t judge upon this user behaviour. Users are totally free to use their 
own or public large DNS servers to avoid ISP blocking.
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