Network settings in macOS

Change your internet or network connection settings in Network System Preferences.

Wi-Fi / WLAN

On the macOS Task Bar you can see whether the Wi-Fi interface of your Mac is active and connected to a Wi-Fi network or not. When you click on the Wi-Fi symbol (see image on the right) you will see all available Wi-Fi networks which are in reach. The small lock behind some networks indicates that the network uses encryption and needs authentication. This menu also gives you the option to activate/deactivate the Wi-Fi interface.

How to configure DESY and eduroam WIFI on your Mac?

Please click on the appropriate profile below, confirm the installation of the profiles if necessary and enter your Wi-Fi credentials in the corresponding fields.

Find more details about configuring WiFi on your Mac on our WiFi instruction page.

Further information on this topic can be found on the corresponding network websites WLAN at DESY.


Network Configuration (Ethernet)

In the System Preferences of the Network Interfaces you can find a list of all available communication interfaces as well as corresponding details. Using this menu you can activate, deactivate and configure the interfaces.

The screenshot which you can see on the right shows the standard configuration of the ethernet interface for the DESY internal and the guest network. Various information for the guest network and for the internal network will be acquired by the Mac automatically once the configuration is set to DHCP. More general information about Ethernet at DESY you can find on

Registering your Device for the DESY Intranet

For registering your device for the DESY Intranet please refer to your segment administrator. If you do not know the name of the responsible person please call the User Consulting Office (; ext. 5005).


VPN Connection to the internal DESY Network


  • The VPN resource must be activated for your DESY account.
  • You need the VPN Group Password

Both can be obtained from the UCO (User Consulting Office).




VPN settings

You don't need any additional software.
macOS brings a fully integrated CISCO VPN client with it.

  1. On your Mac, choose Apple menu  > System Preferences, then click Network.

  2. Click the Add button  in the list at the left, click the Interface pop-up menu, then choose VPN. (fig. 1)

  3. Click the VPN Type pop-up menu, then choose "Cisco IPSec" as VPN Type. Give the VPN service a name e.g. "DESY VPN", then click Create. (fig. 2)

  4. Enter the server address "" and the account name (your general DESY account name) for the VPN connection. (fig. 1)

  5. Click Authentication Settings, then enter the Machine Authentication information. (fig. 3)
    "Shared Secret:" <please ask one of your group administrators or the UCO the VPN Group Password.>
    "Group Name:" desy

  6. Click Apply, then click OK.

Select “Show VPN status in menu bar” to use the VPN status icon to connect to the network and switch between VPN services.




When you are finished with the above settings, either

  • click on the "Connect" button (fig. 1) or
  • on the VPN icon in the macOS status bar

and enter your login data (Desy user name and password) when the VPN client prompts you to establish the VPN connection.

If you should not be able to connect via VPN anymore from one day to another and your password is still valid it is possible that your device need a reboot.