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What Is My IP Address? – ifconfig.me

If you want to know you official IP address you can use a lot of sites.


BUT this one works great for me http://ifconfig.me/


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Mac System Integrity Protection Enable and Disable

How to Turn off System Integrity Protection in Mac OS X El Capitan and Mac OS X Sierra

1. Reboot your Mac
2. While booting press the CMD + R Key (hold it until you see the Apple logo)
3. On the top you will find the utilities menu there you can choose Terminal.
4. Now you can enable or disable the System Integrity Protection

5. After changing this you have to reboot the mac.


System Integrity Protection includes protection for these parts of the system:

  • /System
  • /usr
  • /bin
  • /sbin
  • Apps that are pre-installed with OS X

Paths and apps that third-party apps and installers can continue to write to include:

  • /Applications
  • /Library
  • /usr/local

(c) LINK Apple

Example error:


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DynDns Zyxel USG

If you want to use DynDNS with your Zyxel USG you have to create an account (LINK) and find your account settings in your Profil. (direkt Link to you Profil).

The important informations are now your „Username“ and the „Updater Client Key“.

On your USG you will find the DDNS Settings in the Management and Network Section. (see Screenshot)

Choose your DDNS Type. (in our Case DynDNS)
Type in your „Username“ and the „Updater Client Key“. If you have a Firewall with 2 Wan Ports don’t forget to choose the right one.
Check if you have the same settings like in the screenshot. Enable the service.


Check online at DynDNS your LOG if everything is working. (direkt LINK to you LOG)

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Mac ISO to USB Stick

How to create a bootable USB Stick from a ISO file.

First you have to convert the iso file to a img file. This command will do the work.

Then you have to find the attached USB device

Now search for device (for example: /dev/disk3)
and eject this device

Now you can start the copy process (be careful that you choose the right device, all datas on this device will be deleted!!)

Don’t forget to eject the device again before unplugging


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