hackathon

An amazing group of people gathered at this years Chaos Communication Congress to set up multiple alien wavelengths for 34C3.
If you are interested in the detailed setup be sure to check out the slides.

If you couldn't make it to this years DENOG9 conference you can find @marcnetismus and my slides on '200G over alien wavelength' here. If you have any questions feel free to ask.

If you couldn't make it to this years Denog8 conference you can find my slides on 'nesting dwdm within cwdm' here. If you have any questions feel free to ask.

I've been running a http://tinc-vpn.org VPN for about 3 years now and lately came to the decision to improve my setup. One thing I came across was that all my scripts were using net-tools in their tinc-up and tinc-down scripts, meaning commands such as ifconfig etc..
As ...

To allow linux to issue discards through lvm and luks a few steps need to be performed.
I'm running the following setup:

sda
|__sda1 /boot
|__sda2
    |___ LUKS
         |_____ LVM
                |___ /
                |___ /home
                |___ ...

Therefore the discards need to be issued through the filesystem, the LVM and the LUKS ...

We recently bought a Cisco SG500 at work as we needed a cheap switch with 4x SFP Interfaces.
In the default configuration the SG500 only offers 2 SFP Ports for networking, the other 2 are used for stacking and they don't show up in show interface status. Howsoever if ...

I just got an alix apu.1c4 in the mail. It is a great board for ~200Euro with a great set of features, you can find more on it here.

First step is to pick up the BIOS-Update here.
Then unpack the file:

tar xjvf apu_tinycore.tar.bz2

Now we ...

Quite a while ago I got to toy around with some ubiquiti UAP Pros, awesome, cheap, performant WiFi Access Points.
As I missed the last train home from my hackerspace I began to toy around, always on the hunt for a little exploit.
Webinterface Exploits(XSS, SQL Injections or what ...

If an error like this shows up in your logfiles:

ix0: <Intel(R) PRO/10GbE PCI-Express Network Driver, Version - 2.5.15>
ix0: Unsupported SFP+ Module

I might be able to help.
It’s not as straight forward as with linux, but we’ll make it work.
First off we ...

I recently got myself a Intel X520-DA2 10GBE NIC and some SFP-10G-SR+-SO SFP+ Modules to toy around with.

After assembling the PCIe card I was luckily surprised that my kernel brought up the NIC without any difficultys, so I plugged my SFP+ modules into the server, only to be ...