Arch Linux

lukasm

Member

Registered: 2014-10-24

Posts: 23

https connections fail

Hi all,

For two days I am now trying to fix my arch installation. At that point, suddenly many websites didn't load anymore.

I figured out, that the website that don't load are usually with https, while http works fine.

In order to approach the problem, I downgraded the packages I installed that day that seemed like they could bec onnected to this problems; these are linux, openssl and lib32-openssl. I didn't found anything connected to this and I have no idea how to approach the problem.

What I already tried:
- ping always works for all websites
- wget fails hangs for https (i.e., Resolving the address works fine, connecting just hangs).
- I tried the lan cable with my laptop and that works out fine. The output of "ip addr" is exactly the same.
- I can't find anything related to this in my logs.
- I use pdnsd, but I disabled it until I fix it

What could I do to approach the problem? What could cause this?

Best
Lukas

headkase

Member

Registered: 2011-12-06

Posts: 1,976

Re: https connections fail

The only package that I would consider related to that would be the "ca-certificates" family.  Either the certificates from the package are not being properly installed or the application not properly reading them.

lukasm

Member

Registered: 2014-10-24

Posts: 23

Re: https connections fail

Probably, this was a hint in the right direction. The last day it worked, I updated mono, which also seems to store some certificates; I downgraded mono to the previous version too.

At this point, still all connections over port 443 did not work out. Additionally, ssh connections timed out, for example

 > ssh -v ela
OpenSSH_7.3p1, OpenSSL 1.0.2i  22 Sep 2016
debug1: Reading configuration data /home/lukas/.ssh/config
debug1: /home/lukas/.ssh/config line 8: Applying options for ela
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to ela.cscs.ch [148.187.1.7] port 22.
{... never continues}

As I found out that it was not a local issue (I could connect to my laptop such that it said "Connection refused"), and vice versa I could connect from my laptop to my computer, it was clear that is was not a local issue.

After power off/on of both router and modem, suddenly nothing worked anymore on any computer, the router logs show "dhcpc: request error". The phone worked. I then retried, shut down and restart everything - and suddenly everything worked again as expected, including ssh on my computer.

So if anyone has a clue what could have caused this error initially, I would be very interested in that.