/dev/blog

A tale of awesomazing sandcastles

Yubikey is a great piece of hardware with a lot of functions in a size of an usb stick. Two of the stores are a gpg, and a pki applet, which each can hold gpg keys or x509 Certificates. The PKI applet can be used for storing certificates, which then can be used for signing emails (s/mime), authentication, even encrypting. Here is a little summary how I am using my yubikey.

Continue Reading...

27 Jul 2016

Malware Must Die!

Everyone gets unwanted e-mails in his inbox and some are filtered by the spam filters or virus scanners, other get a way trough. My Spam filters are really good but this does not apply to malware mails and recently I got one. Usually I delete those and live goes on, but this time I was curious what this piece in my inbox would do.

Continue Reading...

I'm working a lot with Django and Celery recently. By the way, awesome Open Source projects!   Celery is a simple, flexible and reliable distributed system to process vast amounts of messages.

For my project I have multiple celery workers, whose resides on different maschines, so called a distributed setup. Now the tasks which celery will execute are not deployed on the task calling maschine itself. therefore the task schedules needs some tuning how they are being called.

A typical celery task example from the docs is to import the task functions or classes and apply .delay() on them...

Continue Reading...

In March 2016, Lenovo started shipping the new Generation of its Thinkpad X1 Carbon series. For some time I was searching for a new Laptop, that fits my needs and finally boght the new thinkpad...

Continue Reading...

12 Nov 2015

DNSSEC with bind9

So there is recently much going on for the topic DNSSEC. It helps to prevent man-in-the-middle attacks for dns requests. Quite controversial is if dnssec is the right protocol for securing the dns requests/responses. At the moment its the only solution for this usecase and good for use. this should...

Continue Reading...