Hackerspace Infrastructure
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2017-10-15
I’ve build the infrastructure of a new hackerspace.
The setup is designed to be cheap, easy to administer and open source.
Category: Blog
Unix PAM: ssh authentication with Yubico OTP and Google Authenticator
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2015-05-26
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
Yubikey NEO: OSX ssh smart card authentication
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2015-05-24
The Yubikey can be used to login into your computer.
This blog post describes the needed configuration steps for OSX
Github: REST API backend/frontend
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2015-05-08
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.
D3: Line Chart Template
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2015-03-01
Simple D3 template to visualize data inside a json file as a line chart
Rails 4: Use Multiple Databases
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2015-02-22
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.
Github: dotfiles
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2015-02-12
Today I decided it is time to publish my dotfiles
Software: nmap
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2015-02-02
Most overviews of the most useful options I found so far are too bloated. So here is my “yet another nmap options overview”
General: Keyboard
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2015-01-01
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
Linux: Limit Transfer Bandwidth
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2015-01-01
Transferring files to a server will often ending up in fully utilizing your upload bandwidth.
Download bandwidth gets slow because SYN-ACK are not coming through.
This blog post describes the option to limit the bandwidth for certain tools.