Claudius Coenen's Blog
Posted by Claudius Coenen on June 26th, 2023 | Comments Off on Spotify CarThing Internet Access
The Spotify CarThing was discontinued late 2022 and subsequently heavily discounted. I got a friend of mine to send one to me, because at that time it was pretty apparent that there was a good chance of this being very hackable. First order of business for me was: internet access.
Here, we’re setting up a Raspberry Pi with a Socks-Proxy, a local webserver and the relevant settings on the CarThing itself.
Read the rest of this entry »Filed under Artikel, Technik | Tags: CarThing, HowTo, Linux, Projekt
Posted by Claudius Coenen on July 9th, 2020 | 1 Comment »
I recently bought a new NAS, after my old one turned ten. I am very satisfied with the reliability of my old QNAP which is still supported with software updates. This makes me a happy customer, and so I did not see any reason to switch brands. After initial setup (networking, firmware update, disabling most services) I did not get around to finishing its setup for a few days. It basically sat there from late May 2020 to early July 2020. Somehow it contracted QSnatch in that timeframe. I’ll explain what I did differently after that.
Read the rest of this entry »Filed under Artikel, Technik | Tags: QNAP, Security
Posted by Claudius Coenen on November 16th, 2018 | Comments Off on tcpdump docker traffic
Tiny howto, so don’t need to look this up as often. In order to tcpdump your own docker traffic, you will need to identify the appropriate interface first:
# docker network ls NETWORK ID NAME DRIVER SCOPE 15a300de bridge bridge local 88d8d7d1 nextcloud_default bridge local
From that, we get the network ID. This will be included (at least partly) in the interface name, so we’ll just take the first few characters and grep:
# ip addr | grep 88d8b 9: br-88d8d7d1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
this gives us the full interface name (ok, basically this is just “br-” followed by the network ID).
We can then just use tcpdump any way we like:
tcpdump -i br-88d8d7d1
Filed under Keine Kategorie | Tags: HowTo
Posted by Claudius Coenen on October 24th, 2018 | Comments Off on Windows/MacOS/Linux Cheatsheet
Filed under Keine Kategorie
Posted by Claudius Coenen on October 13th, 2018 | Comments Off on OAuth2 with Nextcloud (Provider) and GitLab (Client)
I recently configured GitLab as a OAuth2 client to a Nextcloud Instance. I wanted OAuth2 to be the only way of logging in, and Nextcloud to provide the information needed for one-click user signup (actually, three clicks). This process was not entirely straightforward, especially since I don’t want my buttons to read “OAuth2-Generic”. Changing the name after setting everything up, means changing URLs and in combination with Nextcloud this means recreating your tokens. Long story short: I wrote down how I did it.
Filed under Technik | Tags: Admin, HowTo, OpenSource
