Aikataulu – Palvelinten hallinta ict4tn022 3004-ti ja 3002-to – loppukevät 2018 5p

My student Jussi controls 2071 computers.


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.
Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , , , , , , , , , | 125 Comments

Cleaning Up Sneaky JavaScript

Software can phone home. A lot of software “forgets” some Javascript and fonts on HTML pages inside the desktop program to do this. These are some notes about cleaning up Zeal, an “offline” documentation browser.

Continue reading

Posted in Uncategorized | Tagged , , , , , , , | Comments Off on Cleaning Up Sneaky JavaScript

Arvioitava laboratorioharjoitus – Linux palvelimet ict4tn021-3003 – to 8-14 – alkusyksy 2018p1 – 5 op

This is the evaluated lab exercise for Linux Server Administration course, 50% of grade. Student had a Live USB stick and an empty computer, and he could use the public Internet. No other tools were allowed. In Finnish.
Feedback average was excellent 4.8 out of 5. Thank you! More feedback on course page.

Continue reading

Posted in Uncategorized | Tagged , , , , , | 4 Comments

Kali as Salt Slave – install salt-minion from upstream

Salt is a configuration management system. With Salt, you can control thousands of computers.
Kali Linux does not have salt-minion in the default repositories, so you have to install it from upstream.
Continue reading

Posted in Uncategorized | Tagged , , , , | Comments Off on Kali as Salt Slave – install salt-minion from upstream

Arvioitava laboratorioharjoitus – Tunkeutumistestaus ict4tn027-3001 – Autumn 2018 – period 1 – 5 op

This is the evaluated final exercise of my penetration testing course. Five and half hours to break into targets + a little OSINT task. In Finnish.
Course is complete. Feedback average was excellent, 4.9 out of 5.0. Thank you! More feedback on course page.


Continue reading

Posted in Uncategorized | 3 Comments

Identity Management Systems Compared

IdM comparison by Markus, Jan and Eetu



One user account, multiple systems. Identity Management (IdM) systems put users in one place. The same user can then login intranet, SSH to Linux and read his email.
My students Markus, Jan, Eetu have compared Free IdM software (in Finnish). After the initial screening, they find Midpoint and Apache Syncope most promising. Next, they will start actual tests.

OpenSourceIdm blog

https://opensourceidm.wordpress.com/2018/10/03/avoimen-lahdekoodin-idm-jarjestelman-vertailu-7-7/#post-111
Posted in Uncategorized | Tagged , , , , , , , , , , , , , | Comments Off on Identity Management Systems Compared

Penetration Tester Visiting from SilverSkin

Penetration tester Dani Frisk visits my course Tuesday.
Dani is a 20 year old hacker from SilverSkin Oy. Dani’s work includes traditional penetration testing against mobile, desktop and network applications. He is also interested in hardware and firmware.

Visit is part of Haaga-Helia pentesting course. It starts at Tue 2018-10-02 at 14:00 pa5004. Following the lecture requires knowing the basics of networks and penetration testing. First Dani will describe a typical pentesting work assignment. Then there is time for audience questions.

Posted in Uncategorized | Tagged , , , , , , , | Comments Off on Penetration Tester Visiting from SilverSkin

Hello World Python3, Bash, C, C++, Go, Lua, Ruby, Java – Programming Languages on Ubuntu 18.04

Hello world! All programs start with a hello world. It tests that your environment is working, so that you can run your code.
This is how you install and run the most important languages on Linux: Python 3, Bash, C, C++, Go, Lua, Ruby and Java.
Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , , | Comments Off on Hello World Python3, Bash, C, C++, Go, Lua, Ruby, Java – Programming Languages on Ubuntu 18.04

Biometrics in Haaga-Helia – eye tracking, pupil size, galvanic skin response, facial expressions, heartbeat

See how listener’s emotional reactions are synced to mine. I pitched my doctoral thesis subject for one minute. Graph shows GSR (galvanic skin response) for both me and the listener. We also measured pupil size, facial expressions, heartbeat, eye fixation and other biometrics today.

Continue reading

Posted in Uncategorized | Tagged , , , , , , , , | Comments Off on Biometrics in Haaga-Helia – eye tracking, pupil size, galvanic skin response, facial expressions, heartbeat

Forgot MariaDB Password – Fix: sudo mariadb -u root

Forgot your MariaDB password? Luckily, you don’t need password for administrative access.

$ sudo mariadb -u root

Continue reading

Posted in Uncategorized | Tagged , , , , | Comments Off on Forgot MariaDB Password – Fix: sudo mariadb -u root