My Link Collection

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unsorted and growing …

Hugo Quick Start

Jedadiah Casey

Jerome Tissieres

cool Hugo Tutorial

Oreilly, Working with Static Sites

Hugo Directory Structure

Hugo Concepts

Hugo Themes

Markdown Editor Mac/Win

Nginx Config Engine

OpenBSD Autoinstall stuff

BSD & Coding Guy

AS IP Lookup API

Offline AS Lookup

PIP Intro & Quickstart

Cool Handbook for BSD Starters

Herbstforum Altbau 2018 - Einfach. Besser. Leben

Using Pandas to Read Large Excel Files in Python

SSH to remote hosts though a proxy or bastion with ProxyJump

Be your own VPN provider with OpenBSD

Building VPNs on OpenBSD

Instant terminal sharing through SSH

Self-hosted Speedtest for HTML5 and more

Unix History

DNSSEC Resolver Test

Schnauze Windows 10


VPN with OpenBSD

Bash Quick References

ssh - who are you … ?

Capture Credentials in Go - Flamingo

The Ultimative PCAP

Requirements for trusted certificates in iOS 13 and macOS 10.15

NAT GW with Debian

NGINX Tricks

Pionierprojekt in den Schweizer Alpen

Rutger Bregman tells Davos to talk about tax: ‘This is not rocket science’

Tucker Carlson Blows Up at Rutger Bregman in Unaired Fox News Interview | NowThis

Was bedeuten die Target-Salden?

Forti on Promox ?

Medien Navigator PDF

SSL & SSH Interception

Cool Python Library for humans instead machines

macOS über die macOS-Wiederherstellung neu installieren

SSH-MITM Kali/Ubuntu

SSH Agent Hijacking

cooles JQ Tutorial

how to install a honeypot in 30min

Open Source Identity and Access Management

How to Setup Hugo, Tips and Tricks

lightwight IDE von Remo

Encrypt Files using SSH Key

Encrypt Files using SSH RSA Key -> GIT REPO

bash script parse nginx log

Replicate SQLite DB

Using a Database to Store Data Captured with tcpdump

Network Traffic Visualization project

Sicherheit/Content Security Policy

openbsd rc.d system

good alternate for Teamviewer !

bgp-configuration-best-practices blackholing

Secure Webspaces with NGINX & Chroot

Sqlite3 sync over ssh …

Apache, PHP-FPM, chroot jails, MediaWiki, MySQL, and so on

Secure webspaces with NGINX, PHP-FPM chroots and Let’s Encrypt

Tutorialspoint - cool Tutorials for all Kind of Things

SQLite Performance Tuning In A Nutshell

Data Exfiltration with scapy

Creating ACK-GET packets with scapy

How to Build a TCP Connection in Scapy


Paket Manager for Windows

Host Based SSH Authentication

Making repositories available to both ssh and http mode clients

OpenBSD is back! Now with GnuPG

Scion Lab - BGP Free Internet :)

git-crypt and gpg2

A Secure Internet Architecture - PDF - 500 Pages - map

Setting up a mail server with OpenSMTPD, Dovecot and Rspamd

Configuring mail server on OpenBSD 6.5

dank-selfhosted OpenBSD & Ansible

A simple interface to GPIO devices with Raspberry Pi.

The world’s most integrated IOT platform with end-to-end solutions to fit any project.

apu4 series system board

PC Engines APU GPIO on FreeBSD

Generic Router Encapsulation (GRE) Tunnel

IP-IP Tunnel

How to reset cluster configuration in Proxmox 2

THE HACKERS CHOICE - Attacking the IPv6 Protocol Suite

IOT Guy with Swiss Accent


Swiss public transport API

Welcome to HB9FXQ’s sdr-setup-notes!

Welcome to Absolute Zero - MicroControllers


adafruit i2c devices

Adafruit’s Raspberry Pi Lesson 4. GPIO Setup

Mark Ofner Turbo Elektronik

Linux for ARM development boards

Automated Troubleshooting - Bachelorarbeit HSR 2018

How to add a new hard disk or partition using UUID and ext4 filesystem

saltpack - a modern crypto messaging format - End-to-end encryption for things that matter

The Security Blogger

Ansible Loops

OpenBSD DNS Server with unbound and nsd

python and sqlite

MQTT for system administrators

httpd, OpenBSD, flat-files, and awk

Ansible Cheat Sheet Certificate Search

certbot on openbsd

Share Z-wave dongle over IP (USB over IP using ser2net / socat ) guide

Bachman-lan - Promox Stuff

Home Automation und so

Introduction to GSM - GSM for Dummies

Check_MK: Agent Monitoring via SSH

Proxmox Remove Cluster Config

10 Dinge über Ansible


This is the official repository for the Cowrie SSH and Telnet Honeypot effort.

Homelab Panel: Allan Jude et al

git 101

cluster not ready - no quorum? (500)

Unattended Batch Jobs using SSH Agent

TPot HoneyPot

openbsd 2fa

ssh hardening

Ascii Network Doku :)

ascii doku with vim

OpenBSD Intro

Manage DNS records with asynchronous and simple APIs.

Ansible x OpenBSD Web Deployment

Offline Root Certificate Authority for SSL Certificates - OpenBSD

running F5 on Proxmox

F5 Default Passwords

F5 on Proxmox

F5 Ansible Provider (Lab)

gitolite, install and setup and migrate

how to build an openbsd kernel

Ansible & F5 Workshop

Reverse SSH Examples

How NAT traversal works

Checkmk Alarmierung via Threema

OpenBSD on Raspberry Pi 4

Blog - Zugschlussbeobachtungen

Unattended Batch Jobs using SSH Agent

ssh nachbrenner :)

sieht, was andere übersehen.

friedlich in die katastrophe

nginx mirroring tips and tricks

bsd brutefore

http stresstest in go

Tmux Cheat Sheet

Free EBook C Language

BSD, C, httpd, SQLite.

Prune a file set according to a given age distribution

Netdata Monitoring Solutions

fastnetmon community edition

nft intro from ungleich

SSH configuration: ssh_config - all you need to know about ssh

Dr. Daniele Ganser über Corona und die Medien

http stresstest

moz://a SSL Configuration Generator

QUOBYTE FREE EDITION - Data Center File System

Im Gespräch: Dr. Daniele Ganser („Imperium USA: Die skrupellose Weltmacht“)

KenFM im Gespräch mit: Gerald Hüther („Mit Freude lernen“)

Docker and Kubernetes Tutorial | Full Course [2020]

Log Managementbased on ELK Infrastructure Monitoringbased on open source grafana Cloud SIEM

grok filter scip

FortiUnicorn (fortinet-2-elasticsearch)

Jitsi OpenSource Online Meeting

host your own jitsi instance

Dr. Daniele Ganser: Corona und die Medien (Düsseldorf 11. September 2020)

A blog about VoIP, WebRTC and real-time communications security by Enable Security

Free Online Voting Tool

Kennst Du schon das Internet?

Install Proxmox virtual machines with Terraform

Provision Proxmox VMs with Terraform, quick and easy

Provision Proxmox VMs with Ansible, quick and easy

Provision Proxmox VMs with Terraform, quick and easy

BookStack is a simple, self-hosted, easy-to-use platform for organising and storing information.

BLOG. IT-Sicherheit | Datenschutz | Hacking


Keychain for Linux (ssh-agent und so …)

OpenBSD Router Guide - Network segmenting firewall, DHCP, DNS with Unbound, domain blocking and much more

learning linux

4 Ways to Reverse Proxy with Nginx

Self-hosted Load Balancer for bare metal Kubernetes

Download EJBCA® – the Open Source CA

Apache Guacamole is a clientless remote desktop gateway

Istio Connect, secure, control, and observe services.

Einen Reverse Proxy Server aufsetzen

How to use Charles Proxy to rewrite HTTPS traffic for web applications

CCC Wie erzeugt man ein Blackout

IPv6 Is a Total Nightmare — This is Why

Welcome to tinc! MeshVPN

Top 16 AD Vulnerabilites

Packet Radio Schweiz

Amateurfunk im Tesla :)

Nebelkarte / Nebelsimuation Schweiz

Decrypting OpenSSH sessions for fun and profit

Zeek is a passive, open-source network traffic analyzer.

Public API’s ? You can choise …

Auf ein Bier mit… Daniel Gutenberg

Der kleine Fiber Guide - Matthias Cramer

Some Differences between macOS and Common Unix Systems

Web-based SSH in your browser

OpenBSD as an IPv6 router

Smokeping with Nginx …

running OpenBSD on Hetzner

ufw - UncomplicatedFirewall

going paperless / django app indexing pdf

SSHScan is a testing tool that enumerates SSH Ciphers

SSHscan is a simple utility for inspecting or auditing an SSH server for various settings such as supported encryption and key exchange algorithms.

Netzfrequenz Vorfälle

ssh - Authenticating by Trusted Host

An ACME Shell script:

Let’s Encrypt via für Apache und Nginx

let’s encrypt wildcard certificates & ephemeral nsd

IPv6 home LAN with OpenBSD part 2: connecting to the IPv6 Internet

Humboldt-Universität zu Berlin - Viel Unix Doku

MarkDown CheatSheet

Mnm – an open source project to replace email and SMTP

Decrypting OpenSSH sessions for fun and profit

How to block/allow IP-addresses in Nginx


GPG/PGP Decoder

Automating Cisco commands with C.R.A.SSH

ciscocmd is a Tcl/Expect script.

Faces of OpenSource

BSD Synergy Episode 1: Who, What, When, Where, Why BSD?

j2cli - Jinja2 Command-Line Tool

Cisco PSIRT tool in bash

pfSense REST API Documentation

SSH Public Key Authentication on Cisco IOS

Ansible for Networking - Part 3: Cisco IOS

Elektronik Labor Ein kleiner Einblick in meine Wertkstatt.

New LibSSH Connection Plugin for Ansible Network Replaces Paramiko

Nginx Location Module

The UNIX system family tree: Research and BSD

TUTORIAL: Install #OpenBSD on a PINE64 ROCK64 media board.

Plakete und so :)

Unleashed: Setting Up 802.1x EAP with Dynamic VLAN with Windows NPS Server

OpenBSD Jumpstart for Beginners

Why OpenBSD Rocks

howto/OpenBGPD, dn42, Looking glass

OpenBSD CARP Notes

Bscp – Secure and efficient copying of block devices

OpenBGPD gotta go fast / Claudio Jecker

rpki console Job Sniders

FS Store 48G Switch mit POE, 4 x 10G Uplink

KDE on MacOS

Raspberry Pi Pico für 5 CHF :)

fast tls scanner by joswr1ght

croc is a tool that allows any two computers to simply and securely transfer files and folders

OpenBSD / OpenBGPD as Route Server

Qrator.Radar analyzes BGP paths data collected from more than 800 sessions, serving analytics and real-time incident monitoring for Internet Service Providers globally.

KernelCafe, nteractive access to connect to hosts running exotic software/hardware combinations

OpenBGPD turns 10 years - Henning Brauer

Ansible Playbooks for automating your 802.1x projects

Ansible: Template Engine nutzen um Cisco Konfigurationen zu erzeugen

Ansible with Cisco

LVM vergrößern unter LInux

Large FTP Archive (up to 25 years …)


WPA2 Enterprise OpenBSD (Portugese)

What security does a default OpenBSD installation offer?

100G IDS

Build a FreeBSD Update Server

Senior Admin Blog


Raid 60 und so

IDN - Internationalized Domain Names


ohmyksh is a framework for expanding OpenBSD’s ksh. It offers:

Jool is an Open Source SIIT and NAT64 for Linux.

Some Unofficial WireGuard Documentation

Multicast Security IPSEC

Egg Timer :)

HowTo run pimd on OpenBSD

Multicast with FreeBSD

Deploying Anycast DNS Using OpenBSD and BGP

OpenBSD on Hetzner Cloud

Bash scripting cheatsheet

Is there a Google Authenticator desktop client?

Hetzner Cloud CLI

How to upgrade Debian 9 to Debian 10 Buster using the CLI

Unix Introduction — Bash Startup Files Loading Order

Distributed and scaleable Jitsi Meet

From zero to Kubernetes in Hetzner Cloud with Terraform, Ansible and Rancher

Server auf Hetzner mit Terraform und Ansible provisionieren

Big list of http static server one-liners

An Introduction to Terraform

QEMU Guest Agent version for FreeBSD guest

FreeBSD - LibXo - A Library for Generating Text, XML, JSON, and HTML Output

Splitting the ping

Comparison of NTP implementations

THC’s favourite Tips, Tricks & Hacks (Cheat Sheet)

netmap-unipi / netmap-tutorial

AWS Basics for Beginners - Full Course

h4x0r-dz / RCE-Exploit-in-BIG-IP

(Completely) randomize IP addresses in PCAP file

Populating OpenSSH chroot on OpenBSD

Top 25 Nginx Web Server Best Security Practices

A utility for creating a Bash CLI application.

Wireshark Tutorial: Decrypting RDP Traffic

Flugbewegungen über der Schweiz und Süddeutschland

a complete computer science study plan to become a software engineer

Mini-PC ASRock 4X4 BOX-4000

Intel® NUC-Kits

https://5 Useful jq Commands to Parse JSON on the CLI

Manage SSH sessions simultaneously on multiple systems.

Regex Tester


tiny key/value dabatase in bash

IoT-Toy-Trafficlight ( Spielzeugampel )

Automate your NOC World Map at scale

R is a language and environment for statistical computing and graphics.

Yan Holtz - I’m a data analysis and data visualisation specialist currently

A How-To Guide to BGP Multihoming

Record and share your terminal sessions, the right way


Resizing pane is not working for tmux on mac

How can I run ssh-add automatically, without a password prompt?

Privacy protection. Anonymity online. Anonymous Operating System.

WireGuard IPv6 VPN with

The modern, interoperable DC Part 1: Solving “last mile” problems with BGP

A collection of .gitignore templates

Playing battleships over BGP

Glorytun is a small, simple and secure multipath UDP tunnel.

DSVPN is a Dead Simple VPN,

letsencrypt/acme client implemented as a shell-script – just add water

The quick and simple editor for cron schedule expressions by Cronitor

a commenting server similar to Disqus


Add comments to your blog with Isso

Captchas erstellen in PHP erstellen

Internet Hall of Fame - Celebrating people who bring the Internet to life

wildcard DNS for everyone -

DEF CON 23 - Dan Kaminsky - I Want These * Bugs off My * Internet

Ansible - Accessing information about other hosts with magic variables

Implementierung von IEEE 802.1X Authentifizierung in der Abteilung Informatik

sys4 - Upgrade IOS with ansible

How to install OpenBSD on a Raspberry Pi 4

Install MISP on OpenBSD

Using goaccess for real time log visualization

InterPlanetary File System (IPFS)

Drupal site, running on a Kubernetes cluster of Raspberry Pi computers

How To Run A Server At Home Without An IPv4 Address

stripe - Mit uns zahlt das Internet

Flowchart Maker and Online Diagram Software

An Interview With Linus Torvalds: Linux and Git

Dokuwiki on OpenBSD

OpenBSD: getting started - Written by Solène

Steve’s Shell Coding Tips

Hosting SQLite databases on Github Pages

Mastering Chaos - A Netflix Guide to Microservices

Two methods to use the ping command to quickly scan a network

grex - automatically generating a single regular expression from user-provided test cases

global playground dfn42

Dead Man’s Switch - what should happen if you’re gone one day … ?

Creating a Wireguard VPN on OpenBSD

Major DNSSEC Outages and Validation Failures

A secure network that just works

Tailscale on OpenBSD


besorgte-eltern - BITTE SCHAU GENAU HIN

Setting up OpenVPN on OpenBSD with Client Certs

BSD, C, httpd, SQLite.

Mailu is a simple yet full-featured mail server as a set of Docker images.

Full Disk Encryption with OpenBSD and a Serial Console

Installing OpenBSD 6.8 with disk encryption (+ FVWM ricing) - backups with Plakar

Using UTF-8 (Unicode) on FreeBSD

odroid Cluster :)

mimar - How to Increase OpenBSD’s Resilience to Power Outages

OpenBSD on a Laptop

Bootstrap OpenBSD, Example Script

On building an Ansible training environment on FreeBSD

OpenBSD DNS Server with unbound and nsd

How to test and validate DNSSEC using dig command line

OpenBSD - Configure dnssec in nsd

remote-unlock allows one to unlock a CRYPTO discipline remotely via OpenSSH.

RIPE 82 - Geoff Huston - DNS Evolution

RIPE 82 - Christian Adell Querol - How to Handle your Circuits Proactively

RIPE 82 - Nico Schottelius - Entering the Post-IPv4 Era

Geoff Huston - The ISP Column

dog, the command-line DNS client - purrito: ultra fast, minimalistic, encrypted command line paste-bin

Skunk - Gigabit Ethernet Tap & Switch

The state of toolchains in OpenBSD

The state of toolchains in OpenBSD

OpenBSD on EdgeRouter Lite (Ubiquiti)

Perl: warning: Setting locale failed in Debian and Ubuntu

Setting up a WireGuard client with routing domains on OpenBSD

metal stack - Base your infrastructure on modern, open source software with metal-stack.

Poseidon - Minimal and free Kubernetes distribution and related free software

packetlife - Source-based RTBH

Country IP Blocks Database (60$ / Mt)

FastNetMon Open source DDoS mitigation toolkit

Algo VPN is a set of Ansible scripts that simplify the setup of a personal WireGuard and IPsec VPN

ShellCheck - A shell script static analysis tool

OpenBSD on AWS

WRP - Web Rendering Proxy

Supermicro Twin Servers

Serious Shell Programming

Troubleshoot and Enable Debugs on ISE

How to execute CGI scripts using fcgiwrap

FreeBSD 12 & Nginx & Kirby CMS

Working with Linux VRFs

The best way to store your dotfiles: A bare Git repository

Rolling Back OpenBSD PF Changes

NeXT Steve Jobs 1991 - Product Video Featuring NeXTdimension

Solidrun - Embedded Edge Computing

ClearFog Base - Installanleitung

BGP Open-Source Tools - Quagga vs. BIRD vs. ExaBGP


CNCF Cloud Native Interactive Landscape

BusyBox: The Swiss Army Knife of Embedded Linux


AWS, JQ and bash command cheat sheet

aws cli filter


Faster failover and better load balancing with BGP & ECMP

Cisco ISE login Page IP Access restriction - Network Miner and other Pcap Stuff

BFD implementation and support in OpenBSD

nfsen/nfdump on openbsd

Handy one-liners for SED

Cisco Remote Automation via SSH

Python Automation on Cisco Router and Switches using SSH

Python: Getting JSON data from remote NX-OS device

Network Lessons - Python SSH

Compare Paramiko, Netmiko and NAPALM network automation


10 best Ansible modules for infrastructure as code

Inkplate 10 - A low-power, easy-to-program, open-hardware e-paper display with Wi-Fi support and a 9.7" screen

Keychain helps you to manage SSH and GPG keys in a convenient and secure manner

Asterisk Book v3.0

OpenBSD: Asterisk Secure Internet Telephony

Asterisk & IAX

How to configure a SIP endpoint for intra-office calling

Connect an Asterisk system to the public switched telephone network

6 OpenSSL command options that every sysadmin should know

How to configure an Asterisk dialplan for intra-office calling

An introduction to VoIP for sysadmins

An introduction to Asterisk

pjsip Begriffsdefinitionen, grundsätzliches Funktionsprinzip

Debugging SIP message traffic with PJSIP History

Konfiguration: Asterisk PBX & SIPTrunk

netcopa (Network Configuration Parser)

TTP template for parsing “show run” for cisco IOS

Yesterday’s modems are today’s transponders.

The ForwardingPlane

Containerlab focuses on the containerized Network Operating Systems

Voice-over-IP mit Asterisk und Telekom

Home network 10 Gbit/s upgrade

A quick introduction to netsim-tools

Self-configuring BGP monitoring tool, which allows you to monitor in real-time if:

OpenSSH server and client / mozilla

Read the Docs: Documentation Simplified

Deco X60 AX3000 Mesh-WLAN-Netzwerk

Entgoogle das Internet bietet Ihnen die Möglichkeit, mehrere Schritten zu begleiten.

IPng Networks / pimvanpelt

30 Handy Bash Shell Aliases For Linux / Unix / MacOS

How to Resize an OpenBSD Root Partition

OpenBSD, how to virtualize host and guests on same network.

GoatCounter server setup on OpenBSD

Sympa is an open source mailing list manager

sympa, opensmtpd setup documentation

OpenBSD Mail Processing - fetch, filter and deliver mail

OpenBSD Example - Fetch your inboxes with fdm

Mary Poppendieck - Reliability Engineering: One of the Best Jobs in Software Engineering

Password Manager in Go !

A framework for OpenBSD’s ksh

Comparing Open Source BGP Stacks

An open-source hardware build-it-yourself device to remote-control up to 48 devices via their RS-232 serial port.

Roll Your Own Network

PowerDNS Python CLI

PowerDNS Authoritative Server with DNSSEC

Grundlagen Kryptographie

OpenBSD Router Guide

Introducing BlueOnyx / Nachfolger Cobalt RaQ4 Server

NSA / Kubernetes Hardening Guidance


Release Go projects as fast and easily as possible!

OpenBSD is back! Now with GnuPG

MISP - Threat Intelligence Sharing Platform

Working within OpenBSD’s chroot(8) jail for httpd

Chw00t: How to break out from various chroot solutions

marc - isolating untrusted programs in ssh chroot jails

Send email with chrooted PHP in OpenBSD

iana - Root Zone Database

xkcd - Earth Temperature Timeline

How to upgrade Debian 10 to Debian 11 Bullseye using the CLI

The only cheat sheet you need !


Instead of a shell, you get a chat prompt :)

sshchat on openbsd - Welcome! Browse away to your amusement, and feel free to add some quotes yourself. - Modern Internet Standards provide for more reliability and further growth of the Internet. Are you using them?

OpenBSD - Configure dnssec in nsd

Getting Started with Netmaker: A WireGuard® Virtual Networking Platform


How to Build a Simple REST API in PHP

Create and Consume Simple REST API in PHP

Caddy is an extensible server platform that uses TLS by default. written in go

20 Jahre Camp die Evolution des Chaos Communication Camps

An Introduction to JQ

Mail Tester (Prüfen Sie Ihre E-Mail auf Spam-Verdacht)

Running My Own Email Server

How to set up tmux so that it starts up with specified windows opened

Git Branches: List, Create, Switch to, Merge, Push, & Delete

Htmlq: like jq, but for html

General Notes - Linux Commands

Authelia 2FA/SSO for Nginx technotes - Nix, Scripts, and Documentation

Force Push in Git - Everything You Need to Know

Cgit, Nginx & Gitolite: A Personal Git Server

Bund Dev Open API’s

terraform - Building a high available Anycast service using AWS Global Accelerator

testssl - check certs offline / internally

what can possilby go wrong with ssl ?

Gitlab Server / Doku


Setting up SSH forwarding

SSH and locked users / usePAM

ssh-hardening (Chef cookbook)

checkmk auf der cli

How to Set Up a Firewall with UFW on Debian 10

Install and Configure Fail2ban on Debian 10

Swaks - Swiss Army Knife for SMTP

NeverSSL - helping to get you online

sha256: e904bc0be068bd519d257f602b6010089dc519852e8f93cbdff95a4deb0dc361