Netstat Visualization with Neo4j

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Neo4j makes it possible create nodes, describe relationships between the nodes, and query the database. It visualizes the output and you can spot pattern easily.
This project visualizes the information from netstat files collected on multiple nodes. Read More

Hackerspace Infrastructure

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I’ve build the infrastructure of a new hackerspace.
The setup is designed to be cheap, easy to administer and open source.

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Unix PAM: ssh authentication with Yubico OTP and Google Authenticator

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Login should be done with 2FO. My preferred way is to use my YubiKey.
As a fallback I want to use the Google Authenticator. It is needed when you need to use a ssh client on the phone for example.

This blog post describes the the configuration of a Yubikey, pam_yubico and pam_google_authenticator

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Github: REST API backend/frontend

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Today I’ve published my first ruby on rails and as well my first swift application
I still would not call myself a programmer. It was just for fun and maybe it is useful for someone else out there.

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Rails 4: Use Multiple Databases

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The idea was to have a rails application that could run multiple times.

They all have their own state, but share some data.

For this example say you have some instances of a game. The games don’t interact with each other. Lets imagine them as different game worlds.
A user should be able to use different worlds or can at least switch between them. Therefore it was required to have some kind of master data for the user accounts.

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Software: nmap

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Most overviews of the most useful options I found so far are too bloated. So here is my “yet another nmap options overview”

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General: Keyboard

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For me it takes some time to adapt to a keyboard. Especially the switch between soft laptop keyboards and normal keyboards takes some time until I feel home.
The layout is also important and I wanted to have a similar setup everywhere.

The blog post describes my setup

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