Debian on Barracuda NG F10 Firewall


While I was tearing down the firewall the CF-Slot jumped right into my eyes. Every Linux guy might think the same. 🙂

So i debootstraped a CF-card made it bootable and right after the first try, bam, working.
The Hardware got freed from the propritary Linux OS and crappy tools and … Yes the backdoors, bugs and security holes, because you won’t get any free downloadable firmware updates. This is really annoying on Barracuda firewalls. It’s a shitty firewall. Every crappy TP-Link does the same things in production.

Have fun!

Monitor the RAID Status Avago LSI Logic SAS3008 Fusion-MPT SAS-3 with Linux


Need to monitor the RAID Status of your Avago LSI Logic / Symbios Logic SAS3008 PCI-Express Fusion-MPT SAS-3 under Linux with perl?

Yes Avago has a crappy website. When you search the website for SAS3008 you only find some pdf. But not the utility to query your raid controller. Crappy website or intentionally. Who knows 🙂

Below is a script which send’s a simple mail if something goes bad to your RAID. Just put it in your crontab. Might someone want’s to adopt it. Might use with Nagios/Icinga. Actually I’ve not the case to do this. Might later…


use warnings;
use MIME::Lite;

$emailFrom = 'root@server.domain.tld';
$emailTo = 'hostmaster@yourdomain.tpl';
$smartHost = 'smarthost.mail.local';
$hostName = 'server.domain.tld';
$pathSas3ircu = '/root/bin/SAS3IRCU_P12/sas3ircu_linux_x64_rel/sas3ircu';

if (check_status() == 1) {
  $body = join("", get_info("0","STATUS"));

sub check_status {
  $error = 0;

  foreach $line (get_info("0","DISPLAY")) {
    if ($line =~ /Status of volume/) {
      if ($line !~/Okay/) {
        $error = 1;
    if ($line =~ /State/) {
      if ($line !~ /Optimal/ ) {
        $error = 1;
  return $error;

sub get_info {
  $arg1 = shift;
  $arg2 = shift;

  $cmd = "$pathSas3ircu $arg1 $arg2";
  @output = `$cmd`;
  return @output;

sub send_email {
  $arg1 = shift;
  $arg2 = shift;
  $subject = "Warning RAID inconsitent $hostName";

  $msg = MIME::Lite->new(
    From     => $emailFrom,
    To       => $arg1,
    Subject  => $subject,
    Data     => $arg2


Here a download link of the tool:

Here a link of an different controller where you find the download link:

Have Fun!

Geiger Counter Visualisation

Hi there!

I build a visualisation (php javascript html5 chart.js mysql perl) for my Arduino Geiger Counter. Here some screenshots.

I’m no professional programmer. But it does what it should. Might someone find this useful.
Here the downloadlink.

Just import the .sql files, connect the arduino via usb, change data formatting if needed and start

Happy plotting 🙂

Ubuntu 16.04 EFI Boot Software Raid


I tried to setup the “EFI System” partition at install time with software RAID1 array. I tried to avoid installing the bootloader to every disk. (I had an RAID1 with spare)

The ubuntu installer allows to set as partition type “EFI System” on the software RAID array. So I thought it would work.

After successful installation the BIOS of the Supermicro mainboard has not found any EFI-Boot partition.

So I destroyed the software RAID of the “EFI System” and installed the bootloader in chroot from a Debian-Live system. I had not to change the partition flag. It was already setup right to “EFI System”

mdadm -S /dev/mdX
mdadm --zero-superblock /dev/sda1
mdadm --zero-superblock /dev/sdb1
mdadm --zero-superblock /dev/sdc1

mkfs.vfat /dev/sda1
mkfs.vfat /dev/sdb1
mkfs.vfat /dev/sdc1

mount /dev/md[RootFileSystemWithBoot] /mnt
mount --bind /dev /mnt/dev
mount --bind /sys /mnt/sys
mount --bind /proc /mnt/proc

chroot /mnt

Now we remove the RAID array from config file

vim /etc/mdadm.conf

Edit your fstab

blkid /dev/sda1
vim /etc/fstab

And last but not least install grub

mount /dev/sda1 /boot/efi
grub-install /dev/sda1
umount /boot/efi

mount /dev/sdb1 /boot/efi
grub-install /dev/sdb1
umount /boot/efi

mount /dev/sdc1 /boot/efi
grub-install /dev/sdc1


Hint: You have to use a install media or live system which is EFI Boot capable and force BIOS to boot from EFI. (You could use my USB Stick). Otherwise EFI support in Linux is disabled.

Have fun!

Arduino Geiger Counter

Hi there,

Need a self build geiger counter? Without complex circurit. Here it is 🙂

Here my Arduino sketch:

#include "DogLcd.h"
#include "Bounce2.h"
#include "RunningAverage.h"

#define calFactor 1.0/5.8

LCD SI pin to digital coupin 7
LCD CLK pin to digital pin 8
LCD RS pin to digital pin 5
LCD CSB pin to digital pin 6
LCD RESET pin is not used +5V
LCD Backlight pin is not used

DogLcd lcd(7, 8, 5, 6);

const byte buttonPin = 3;
const byte displedPin = 9;
const byte buzzerPin = 10;

byte buttonState = 0;
byte lastButtonState = 0;
byte buttonCount = 0;
byte buzzerOff = 0;

volatile unsigned int count = 0;
byte runCount = 0;
unsigned int countPerRun[30];
unsigned int countPerMinute = 0;
unsigned int averageCountPerMinute = 0;
float radiationValue = 0.0;

unsigned long timePrevious = 0;

RunningAverage RunningAverageCountPerMinute(10);

Bounce debouncer = Bounce();

void setup() {
 pinMode(buttonPin, INPUT_PULLUP);
 pinMode(displedPin, OUTPUT);
 pinMode(buzzerPin, OUTPUT);

 attachInterrupt(0, countPulse, RISING);

void loop() {
 buttonState =;

 if (buttonState != lastButtonState) {
 if (buttonState == LOW) {
 if(buttonCount < 4) {
 else {
 buttonCount = 1;
 lastButtonState = buttonState;
 switch (buttonCount) {
 case 4:
 buzzerOff = 0;
 case 3:
 buzzerOff = 1;
 case 2:
 digitalWrite(displedPin, LOW);
 case 1:
 digitalWrite(displedPin, HIGH);
 if (millis()-timePrevious > 2000){
 timePrevious = millis();

 byte i;
 for (i=0; i<30; i++) {
 if (i == runCount) {
 countPerRun[i] = count;

 averageCountPerMinute = RunningAverageCountPerMinute.getFastAverage();
 radiationValue = (float)countPerMinute * (float)calFactor;
 lcd.setCursor(0, 0);
 lcd.setCursor(0, 1);

 if(runCount > 29) {
 runCount = 0;
 count = 0;
 countPerMinute = 0;

void countPulse(){
 if (buzzerOff == 0) {
 tone(buzzerPin, 2000, 15);

The diode I’m using as beta, gamma and x-ray sensor is Teviso RD2014. It is also sensitive to GSM radiation. Nice to find bugging devices. 🙂

Here are some good links I worked with:

Have fun!