2020s

Apply Salt State Every 15 Minutes

Automatically configure hundreds of computers while you sleep. To be more specific, schedule Salt state.apply to run every 15 minutes on slaves.

$ sudo salt '*' schedule.add tapply function='state.apply' minutes=15

Configuration Management Systems - Palvelinten Hallinta - Autumn 2020

Tux the Linux penguin

Just write what you want (idempotency). Control almost everything with one system (single source of truth). In plain text (infrastructure as code, versionable).

Control 10 computers. Or 100. Or 1000. Or control 2071 computers, like Jussi did on a previous course. Or handle 7 different operating systems and OS versions with a single master, like Matias. Course is in Finnish.

Conftero 0.18 Beta

Configuration management system implementing the Hidden Master architecture and Python based configuration. Single binary, no dependencies.

Hidden Master architecture protects against whole categories of attacks, including the type of latest critical Salt vulnerabilities.

Digital Forensics with Kimmo

Your box got owned - but how?

Kimmo Linnavuo will teach CinCan digital forensics in my penetration testing course on w17 Tue. Kimmo works works as an information security specialist at Finnish Transport and Communications Agency Traficom. He has taught CinCan in HelSec, FIRST and Disobey.

Findata Sells Your Medical Data

If you are from Finland, Findata is selling your medical data. They are doing this without your consent.

You can oppose selling your data by sending a message to THL Registry.

Configuration Management Systems - Palvelinten Hallinta - Spring 2020

Tux the Linux penguin

Just write what you want (idempotency). Control almost everything with one system (single source of truth). In plain text (infrastructure as code, versionable).

Control 10 computers. Or 100. Or 1000. Or control 2071 computers, like Jussi did on a previous course. Or handle 7 different operating systems and OS versions with a single master, like Matias. Course is in Finnish.

Remote Learning Tools for Tero's Courses

All my courses are online for spring 2020.

I'll use Jitsi video conferencing, VirtualBox and Xubuntu Linux 18.04. In addition to Internet connection, you'll need headphones, a mic and a webcam. Some 30-40 GB of free disk space would be nice, too.

Log Anomaly Detection With Artificial Intelligence

Can artificial intelligence pick suspicious log entries? My students Tuomo Kuure and Joni Hakala are training a model for that.

They use ELK to collect logs from multiple computers to an ElasticSearch NoSQL database. These log entries are then analysed with their own model using Python Tensorflow in a Docker container with GPU support.

Flask Automatic Forms

Automatically create your database and HTML forms from your model. Short, convenient, but a bit abstract. Short notes.

Deploy Python Flask to Production

Apache Foundation Feather Logo

If a tree falls in a forest and there are no clients, does it make a sound?

Deploy your web app production style. We'll use Apache2 mod_wsgi to install Flask "Hello world" app.

Flask Templates

Templates make it easy to write valid HTML. Flask supports my favourite template engine, Jinja2.

Hello Flask - Write a Python Web App

Python Flask 'Hello world' in Firefox Many popular websites use Python somewhere in their stack: Youtube, Facebook, Google and Dropbox. Flask web framework is used by Pinterest and LinkedIn.

With this article, you learn to install Python Flask and run a "Hello world" in development environment.

Go Programming Course 2020 w22

Gopher the Go Mascot
package main

import "fmt"

func main() {
	fmt.Println("Learn Go in one week - w22. ")
	fmt.Println("Registration opens on w12 Monday. ")
}

Line Plot with JavaScript - Plotly.js

Graph line plots with plotly.js. Plotly is Free software under the MIT license.

Plotly works even if you miss a couple of data points. For example, if you have temperature for all days but Tuesday.

Command Line Basics Revisited

The command line used in Linux and BSD has survived the test of time. It existed before Google, Web, Linux, Windows and even before the Internet. It's also convenient, fast, expressive and easy to automate. I use it every day.

$ pwd
/home/tero

Penetration Testing Course 2020 Spring - Tunkeutumistestaus ict4tn027-3003

Update: Top feedback: 5.0 / 5. Yes, every participant gave feedback, and each feedback was the best grade 5. Thank you!

Learn to hack computers to protect your own. In the course, you will break into target computers. Previous instance had excellent 4.9 out of 5 feedback.

Course is in late spring 2020. Teaching is in Finnish. Enroll now in Peppi: Tunkeutumistestaus ict4tn027-3003.