Arch Linux

DJArch

Member

Registered: 2021-06-23

Posts: 19

Cannot connect to some websites

My knowledge is basically non-existent, and I don't even know how to start debugging this problem:

I am trying to see this website and I get (on firefox):

Hmm. We’re having trouble finding that site.

I also cannot

ping lxplus.cern.ch

I get

ping: lxplus.cern.ch: Temporary failure in name resolution

Some information about my problem:
I only have this problem with this computer. Everything works OK from my phone, and another windows computer connected to the same network.
Every other website I can think of just works. I can also ssh without problem to other servers I have access to.
Some days everything works without a problem, it just doesn't work most of the days.

Can anybody suggest a place to get started with this?

Thanks

Last edited by DJArch (2022-08-19 04:24:37)

mpan

Member

Registered: 2012-08-01

Posts: 1,612

Website

Re: Cannot connect to some websites

Does it work in anything other than Firefox? Can you for example obtain the page using wget (wget manual) or curl (curl manual)? If it’s limited to Firefox, do you have DNS over HTTPS enabled in settings and does changing that affect anything?

Otherwise: what DNS server are you using? If, by any chance, one provided by your ISP, see if changing it to some public DNS helps.

Otherwise: does this return addresses:

getent ahosts lxplus.cern.ch

Does dig return anything?

dig lxplus.cern.ch

If only IPv6 addresses are returned (should not be!), does your network handle IPv6?

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