File Sync: Syncthing

I tested quite a lot of sync tools out there: Dropbox, G-Drive, Bittorrent Sync, ownCloud, plain Rsync,... You name it.
But to be true, I never really liked any tool that much: It never really *worked out* somehow: The Mobile Apps were bad, "Servers" did eat up too much performance, etc. etc.
And we don't want to forget these little itching problems with privacy - thinking about Dropbox, G-Drive and the now closed source Bittorrent Sync...
Well - enter Syncthing: https://syncthing.net/
In truth I can only say one thing: It works. It just, plainly, works for syncing data from your mobile devices to your swarm of servers or pcs.
So give it a shot :)!

[Ubuntu] Automatic Backup of MySQL Databases

Just install automysqlbackup via apt-get.
You can configure the whole system via /etc/default/automysqlbackup
Backups will be sent to /var/lib/automysqlbackup

SSH Socks Proxy

Very easy and handy is to use an SSH Server as Socks Proxy:
ssh -D 8080 username@my_ssh_server

Or use Putty:
Enter the IP Address of your SSH Server, Port and go to Connection -> SSH -> Tunnels.
In Source Port enter the Port where the Proxy should be available. I.e. 8080
Then choose "Dynamic".
Leave Destination Port Empty and the IP Configuration on "Auto".

After connecting to your SSH Server, you can configure i.e. Firefox to use your Socks 5 Server on IP 127.0.0.1 and Port 8080.

[Linux] Delete old SSH Keys and recreate them

If you are downloading an Linux Image for i.e. Embedded Systems like Raspberry Pi, sometimes, the SSH Keys are still on the system and are not recreated.
To do that manually, just enter:

sudo rm /etc/ssh/ssh_host_* sudo dpkg-reconfigure openssh-server sudo service ssh restart

[RaspPi] Trouble with xfce4-panel on Kali Linux

Errors with xfce4-panel

I got an error that the xfce4-panel / Taskbar disappeared.
I solved it by right-clicking on the Desktop, choosing Applications, Settings, Panel.
After that it told me that it got no panel running, and if it should start one.
I answered yes and the panel would appear again.

After an reboot, I always got the question wheter it should start an panel.
As that was quite annoying, I looked for another solution to the problem.
I found the answer here: http://forum.ubuntuusers.de/topic/probleme-mit-panel-und-kiosk-modus/
Just delete the xfce settings like that:
rm -rf ~/.cache
rm -rf ~/.config

After that, click the log out button, UNCHECK the "Save session for future logins" box and choose reboot.

On the next reboot, it should come up correctly again.

[RaspPi] Install Kali Linux on RPi with HDMIPi

1.) Download Kali for RPi
https://www.offensive-security.com/kali-linux-vmware-arm-image-download/

2.) Extract if with 7zip, format your SDCard with the Formatter from the SDCardAssociation and write the Image (kali-1.0.9-rpi.img) to your SD Card

2b.) If you plan on using Kali with your HDMIPi Screen, create an config.txt file with following content on the sdcard to have correct HDMI sizing:
hdmi_ignore_edid=0xa5000080 hdmi_group=2 # HDMIPi for 1280 x 800 hdmi_drive=2 # for alternative modes get sound hdmi_mode=28 # 1280 x 800 @ 60 Hz Specifcations

3.) Boot it

4.) After boot, login with root / toor

5.) Install raspi-config using the terminal
wget https://raw.githubusercontent.com/snubbegbg/install_raspi-config/master/install.sh
chmod +x install.sh
sudo ./install.sh

6.) Configure sdcard reseize, locale and stuff using sudo raspi-config and reboot

7.) Install Kali Metapackages
Kali comes kind of "blank" with no tools.
Choose your needed package from https://www.kali.org/news/kali-linux-metapackages/ and install it using apt-get.
But please look out for the installation size!
I.e. for the kali-linux-top10 package:
apt-get update
apt-get install kali-linux-top10
Or the complete ISO package (9 GB!):
apt-get install kali-linux-full

8.) Reboot
sudo reboot

9.) After rebooting and login with root / toor, enter startx to use Kali