Andreas Dolp e-cite

Authenticate to OpenSSH-Server with either public key or with YubiKey OTP + password

When you have access to your private key file, use it for quick login. When you are on the go, use your Yubikey OTP and your publickey or .

Tutorial: https://developers.yubico.com/yubico-pam/YubiKey_and_SSH_via_PAM.html

Install yubico pam module:
```
sudo apt-get install libpam-yubico
```

Debian KVM installation tutorial

https://wiki.debian.org/KVM

Update system, install KVM (server without graphical tools) and additional tools

sudo apt-get update && sudo apt-get dist-upgrade
sudo apt-get install --no-install-recommends qemu-system libvirt-clients libvirt-daemon-system
sudo apt-get install qemu-utils dnsmasq-base bridge-utils iptables netcat-openbsd
sudo apt-get install ovmf  # For UEFI-Support in VMs (Aber aufgrund eines Bugs sind mit UEFI-VMs keine Snapshots möglich!)
sudo apt-get install qemu-system-modules-spice  # Falls oben mit --no-install-recommends installiert wurde, muss ab Debian Trixie dieses Paket mit installiert werden, damit spice-Grafikausgabe möglich ist.

Debian Docker installation tutorial

https://docs.docker.com/engine/install/debian/

Remove old docker, update and install requirements

sudo apt-get remove docker docker-engine docker.io containerd runc
sudo apt-get update
sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \

Bussysteme

Verbindungstechniken

Um dezentrale Feldgeräte (Sensoren und Aktoren) anzusteuern gibt es verschiedene Verbindungstechniken:

Konventionelle Verdrahtung
- Direkte Verdrahtung von der SPS zu jedem Bauelement im Feld
- Eine Leitung je Feldgerät erfordert einen hohen Ressourcenbedarf
- Unflexibel bei Änderungen
- Herausforderungen bei Analogsignalen (Spannungsabfall proportional zur Leitungslänge)
Dezentrale Peripherie
Serielles Bussystem zwischen Zentraleinheit (SPS) und mehreren Remote-IO-Einheiten

Industrial Ethernet

Grundlagen

Industrial Ethernet dient dazu, den vorhandenen Ethernet-Standard um die Anforderungen aus der Prozessdatenkommunikation zu erweitern.

Es sind insbesondere folgende Anforderungen zu berücksichtigen:

Industrielle Umgebungsbedingungen (Temperaturbereiche; Beständigkeit gegen Öl, Säuren, etc.; Vibrationen; EMV)
Schutzarten (IPxx)
Hutschienenmontage
Spannungsversorgung, typ. 24 V DC
Topologien (Häufig Ring, eher selten Stern bzw. Baum)

Industrielle Netzwerk-Protokolle

Precision Time Protocol

319/udp
320/udp

BACnet

S7COMM

Beispiel PCAPs:

https://github.com/ITI/ICS-Security-Tools/blob/master/pcaps/Combined/Plant1.pcap

Locales
Timezone
Hostname
Domainname
apt-get install open-vm-tools open-vm-tools-desktop terminator wipe virt-manager ssh-askpass dnsutils auto-apt-proxy
apt-get install firmware-linux-nonfree xserver-xorg-input-synaptics
Mac Book Pro: add non-free to packet sources
Install VS Code
Einstellungen / Session and Startup / Application Autostart / Activate SSH Key Agent (GNOME Keyring: SSH Agent)
Einstellungen / Erscheinungsbild / Schriften / DPI-Wert auf 96

Mnemonic Encoding Word List

http://web.archive.org/web/20090918202746/http://tothink.com/mnemonic/wordlist.html

The wordlist contains 1626 words.
All words are between 4 and 7 letters long.
No word in the list is a prefix of another word (e.g. visit, visitor).
Five letter prefixes of words are sufficient to be unique.
The words should be usable by people all over the world. The list is far from perfect in that respect. It is heavily biased towards western culture and English in particular. The international vocabulary is simply not big enough. One can argue that even words like "hotel" or "radio" are not truly international. You will find many English words in the list but I have tried to limit them to words that are part of a beginner's vocabulary or words that have close relatives in other european languages. In some cases a word has a different meaning in another language or is pronounced very differently but for the purpose of the encoding it is still ok - I assume that when the encoding is

	{
	"Name": "VM Operator",
	"IsCustom": true,
	"Description": "Can start, restart and stop (deallocate) virtual machines.",
	"Actions": [
	"Microsoft.Compute/*/read",
	"Microsoft.Compute/virtualMachines/start/action",
	"Microsoft.Compute/virtualMachines/restart/action",
	"Microsoft.Compute/virtualMachines/deallocate/action"
	],

	// From: https://www.dragino.com/downloads/index.php?dir=LGT_92/Decoder/
	// But roll, pitch and altitude are wrong due to <<24>>16.
	// Better: <<8

	//The function is :
	function Decoder(bytes, port) {
	// Decode an uplink message from a buffer
	// (array) of bytes to an object of fields.

	var latitude;//gps latitude,units: Â°